Finding the Fourth Proportional to 837,480.15, 1,155,665.75 and 455,498.73

Step by Step Solution

1. Step 1: Write the proportion equation
   837,480.15 : 1,155,665.75 = 455,498.73 : x
2. Step 2: Convert to fraction form
   837,480.15/1,155,665.75 = 455,498.73/x
3. Step 3: Cross multiply
   837,480.15x = 1,155,665.75 × 455,498.73
4. Step 4: Simplify right side
   837,480.15x = 526,404,279,152.00
5. Step 5: Solve for x
   x = 526,404,279,152.00/837,480.15
6. Step 6: Final answer
   x = 628,557.32