Finding the Fourth Proportional to 1,603,881.72, 2,213,356.73 and 878,756.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,603,881.72 : 2,213,356.73 = 878,756.90 : x
2. Step 2: Convert to fraction form
   1,603,881.72/2,213,356.73 = 878,756.90/x
3. Step 3: Cross multiply
   1,603,881.72x = 2,213,356.73 × 878,756.90
4. Step 4: Simplify right side
   1,603,881.72x = 1,945,002,483,188.37
5. Step 5: Solve for x
   x = 1,945,002,483,188.37/1,603,881.72
6. Step 6: Final answer
   x = 1,212,684.49