Finding the Fourth Proportional to 1,021,288.37, 1,409,381.96 and 613,397.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,021,288.37 : 1,409,381.96 = 613,397.15 : x
2. Step 2: Convert to fraction form
   1,021,288.37/1,409,381.96 = 613,397.15/x
3. Step 3: Cross multiply
   1,021,288.37x = 1,409,381.96 × 613,397.15
4. Step 4: Simplify right side
   1,021,288.37x = 864,510,867,411.52
5. Step 5: Solve for x
   x = 864,510,867,411.52/1,021,288.37
6. Step 6: Final answer
   x = 846,490.46