Finding the Fourth Proportional to 2,155,521.23, 2,974,577.88 and 1,188,740.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,521.23 : 2,974,577.88 = 1,188,740.87 : x
2. Step 2: Convert to fraction form
   2,155,521.23/2,974,577.88 = 1,188,740.87/x
3. Step 3: Cross multiply
   2,155,521.23x = 2,974,577.88 × 1,188,740.87
4. Step 4: Simplify right side
   2,155,521.23x = 3,536,002,282,081.07
5. Step 5: Solve for x
   x = 3,536,002,282,081.07/2,155,521.23
6. Step 6: Final answer
   x = 1,640,439.56