Finding the Fourth Proportional to 837,012.52, 1,155,090.42 and 455,040.76

Step by Step Solution

1. Step 1: Write the proportion equation
   837,012.52 : 1,155,090.42 = 455,040.76 : x
2. Step 2: Convert to fraction form
   837,012.52/1,155,090.42 = 455,040.76/x
3. Step 3: Cross multiply
   837,012.52x = 1,155,090.42 × 455,040.76
4. Step 4: Simplify right side
   837,012.52x = 525,613,222,585.52
5. Step 5: Solve for x
   x = 525,613,222,585.52/837,012.52
6. Step 6: Final answer
   x = 627,963.39