Finding the Fourth Proportional to 1,140.89, 1,714.06 and 654.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140.89 : 1,714.06 = 654.28 : x
2. Step 2: Convert to fraction form
   1,140.89/1,714.06 = 654.28/x
3. Step 3: Cross multiply
   1,140.89x = 1,714.06 × 654.28
4. Step 4: Simplify right side
   1,140.89x = 1,121,471.71
5. Step 5: Solve for x
   x = 1,121,471.71/1,140.89
6. Step 6: Final answer
   x = 982.98