Finding the Fourth Proportional to 825,499.47, 1,138,706.69 and 519,090.75

Step by Step Solution

1. Step 1: Write the proportion equation
   825,499.47 : 1,138,706.69 = 519,090.75 : x
2. Step 2: Convert to fraction form
   825,499.47/1,138,706.69 = 519,090.75/x
3. Step 3: Cross multiply
   825,499.47x = 1,138,706.69 × 519,090.75
4. Step 4: Simplify right side
   825,499.47x = 591,092,109,742.12
5. Step 5: Solve for x
   x = 591,092,109,742.12/825,499.47
6. Step 6: Final answer
   x = 716,041.78