Finding the Fourth Proportional to 1,127.15, 1,555.16 and 672.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,127.15 : 1,555.16 = 672.83 : x
2. Step 2: Convert to fraction form
   1,127.15/1,555.16 = 672.83/x
3. Step 3: Cross multiply
   1,127.15x = 1,555.16 × 672.83
4. Step 4: Simplify right side
   1,127.15x = 1,046,358.83
5. Step 5: Solve for x
   x = 1,046,358.83/1,127.15
6. Step 6: Final answer
   x = 928.33