Finding the Fourth Proportional to 1,127.59, 1,555.89 and 679.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,127.59 : 1,555.89 = 679.36 : x
2. Step 2: Convert to fraction form
   1,127.59/1,555.89 = 679.36/x
3. Step 3: Cross multiply
   1,127.59x = 1,555.89 × 679.36
4. Step 4: Simplify right side
   1,127.59x = 1,057,009.43
5. Step 5: Solve for x
   x = 1,057,009.43/1,127.59
6. Step 6: Final answer
   x = 937.41