Finding the Fourth Proportional to 1,151.10, 1,725.28 and 602.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.10 : 1,725.28 = 602.31 : x
2. Step 2: Convert to fraction form
   1,151.10/1,725.28 = 602.31/x
3. Step 3: Cross multiply
   1,151.10x = 1,725.28 × 602.31
4. Step 4: Simplify right side
   1,151.10x = 1,039,153.40
5. Step 5: Solve for x
   x = 1,039,153.40/1,151.10
6. Step 6: Final answer
   x = 902.75