Finding the Fourth Proportional to 772,499.88, 1,064,715.78 and 513,914.28

Step by Step Solution

1. Step 1: Write the proportion equation
   772,499.88 : 1,064,715.78 = 513,914.28 : x
2. Step 2: Convert to fraction form
   772,499.88/1,064,715.78 = 513,914.28/x
3. Step 3: Cross multiply
   772,499.88x = 1,064,715.78 × 513,914.28
4. Step 4: Simplify right side
   772,499.88x = 547,172,643,483.34
5. Step 5: Solve for x
   x = 547,172,643,483.34/772,499.88
6. Step 6: Final answer
   x = 708,314.21