Finding the Fourth Proportional to 815,993.02, 1,126,047.98 and 453,407.55

Step by Step Solution

1. Step 1: Write the proportion equation
   815,993.02 : 1,126,047.98 = 453,407.55 : x
2. Step 2: Convert to fraction form
   815,993.02/1,126,047.98 = 453,407.55/x
3. Step 3: Cross multiply
   815,993.02x = 1,126,047.98 × 453,407.55
4. Step 4: Simplify right side
   815,993.02x = 510,558,661,150.45
5. Step 5: Solve for x
   x = 510,558,661,150.45/815,993.02
6. Step 6: Final answer
   x = 625,689.99