Finding the Fourth Proportional to 1,116.17, 1,674.15 and 753.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.17 : 1,674.15 = 753.29 : x
2. Step 2: Convert to fraction form
   1,116.17/1,674.15 = 753.29/x
3. Step 3: Cross multiply
   1,116.17x = 1,674.15 × 753.29
4. Step 4: Simplify right side
   1,116.17x = 1,261,120.45
5. Step 5: Solve for x
   x = 1,261,120.45/1,116.17
6. Step 6: Final answer
   x = 1,129.86