Finding the Fourth Proportional to 837,144.96, 1,155,254 and 455,172

Step by Step Solution

1. Step 1: Write the proportion equation
   837,144.96 : 1,155,254 = 455,172 : x
2. Step 2: Convert to fraction form
   837,144.96/1,155,254 = 455,172/x
3. Step 3: Cross multiply
   837,144.96x = 1,155,254 × 455,172
4. Step 4: Simplify right side
   837,144.96x = 525,839,273,688
5. Step 5: Solve for x
   x = 525,839,273,688/837,144.96
6. Step 6: Final answer
   x = 628,134.07