Finding the Fourth Proportional to 1,140.82, 1,711.72 and 556.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140.82 : 1,711.72 = 556.34 : x
2. Step 2: Convert to fraction form
   1,140.82/1,711.72 = 556.34/x
3. Step 3: Cross multiply
   1,140.82x = 1,711.72 × 556.34
4. Step 4: Simplify right side
   1,140.82x = 952,296.86
5. Step 5: Solve for x
   x = 952,296.86/1,140.82
6. Step 6: Final answer
   x = 834.75