Finding the Fourth Proportional to 751,141.72, 1,036,010.14 and 521,699.31

Step by Step Solution

1. Step 1: Write the proportion equation
   751,141.72 : 1,036,010.14 = 521,699.31 : x
2. Step 2: Convert to fraction form
   751,141.72/1,036,010.14 = 521,699.31/x
3. Step 3: Cross multiply
   751,141.72x = 1,036,010.14 × 521,699.31
4. Step 4: Simplify right side
   751,141.72x = 540,485,775,191.00
5. Step 5: Solve for x
   x = 540,485,775,191.00/751,141.72
6. Step 6: Final answer
   x = 719,552.33