Finding the Fourth Proportional to 1,175.72, 1,763.42 and 310.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,175.72 : 1,763.42 = 310.10 : x
2. Step 2: Convert to fraction form
   1,175.72/1,763.42 = 310.10/x
3. Step 3: Cross multiply
   1,175.72x = 1,763.42 × 310.10
4. Step 4: Simplify right side
   1,175.72x = 546,826.17
5. Step 5: Solve for x
   x = 546,826.17/1,175.72
6. Step 6: Final answer
   x = 465.10