Finding the Fourth Proportional to 1,114.84, 1,538.15 and 672.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,114.84 : 1,538.15 = 672.71 : x
2. Step 2: Convert to fraction form
   1,114.84/1,538.15 = 672.71/x
3. Step 3: Cross multiply
   1,114.84x = 1,538.15 × 672.71
4. Step 4: Simplify right side
   1,114.84x = 1,034,728.89
5. Step 5: Solve for x
   x = 1,034,728.89/1,114.84
6. Step 6: Final answer
   x = 928.14