Finding the Fourth Proportional to 1,377,373.71, 2,064,877.23 and 478,698.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377,373.71 : 2,064,877.23 = 478,698.69 : x
2. Step 2: Convert to fraction form
   1,377,373.71/2,064,877.23 = 478,698.69/x
3. Step 3: Cross multiply
   1,377,373.71x = 2,064,877.23 × 478,698.69
4. Step 4: Simplify right side
   1,377,373.71x = 988,454,025,011.83
5. Step 5: Solve for x
   x = 988,454,025,011.83/1,377,373.71
6. Step 6: Final answer
   x = 717,636.77