Finding the Fourth Proportional to 2,188,361,781.67, 3,019,963,621.35 and 1,184,801,218.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188,361,781.67 : 3,019,963,621.35 = 1,184,801,218.69 : x
2. Step 2: Convert to fraction form
   2,188,361,781.67/3,019,963,621.35 = 1,184,801,218.69/x
3. Step 3: Cross multiply
   2,188,361,781.67x = 3,019,963,621.35 × 1,184,801,218.69
4. Step 4: Simplify right side
   2,188,361,781.67x = 3,578,056,578,974,945,792
5. Step 5: Solve for x
   x = 3,578,056,578,974,945,792/2,188,361,781.67
6. Step 6: Final answer
   x = 1,635,038,871.98