Finding the Fourth Proportional to 1,310.76, 1,808.72 and 751.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,310.76 : 1,808.72 = 751.12 : x
2. Step 2: Convert to fraction form
   1,310.76/1,808.72 = 751.12/x
3. Step 3: Cross multiply
   1,310.76x = 1,808.72 × 751.12
4. Step 4: Simplify right side
   1,310.76x = 1,358,565.77
5. Step 5: Solve for x
   x = 1,358,565.77/1,310.76
6. Step 6: Final answer
   x = 1,036.47