Finding the Fourth Proportional to 1,141.74, 1,711.98 and 556.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.74 : 1,711.98 = 556.56 : x
2. Step 2: Convert to fraction form
   1,141.74/1,711.98 = 556.56/x
3. Step 3: Cross multiply
   1,141.74x = 1,711.98 × 556.56
4. Step 4: Simplify right side
   1,141.74x = 952,819.59
5. Step 5: Solve for x
   x = 952,819.59/1,141.74
6. Step 6: Final answer
   x = 834.53