Finding the Fourth Proportional to 1,100.76, 1,658.82 and 940.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,100.76 : 1,658.82 = 940.56 : x
2. Step 2: Convert to fraction form
   1,100.76/1,658.82 = 940.56/x
3. Step 3: Cross multiply
   1,100.76x = 1,658.82 × 940.56
4. Step 4: Simplify right side
   1,100.76x = 1,560,219.74
5. Step 5: Solve for x
   x = 1,560,219.74/1,100.76
6. Step 6: Final answer
   x = 1,417.40