Finding the Fourth Proportional to 1,137.67, 1,566.04 and 980.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137.67 : 1,566.04 = 980.83 : x
2. Step 2: Convert to fraction form
   1,137.67/1,566.04 = 980.83/x
3. Step 3: Cross multiply
   1,137.67x = 1,566.04 × 980.83
4. Step 4: Simplify right side
   1,137.67x = 1,536,012.41
5. Step 5: Solve for x
   x = 1,536,012.41/1,137.67
6. Step 6: Final answer
   x = 1,350.13