Finding the Fourth Proportional to 1,339.56, 2,008.82 and 927.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.56 : 2,008.82 = 927.45 : x
2. Step 2: Convert to fraction form
   1,339.56/2,008.82 = 927.45/x
3. Step 3: Cross multiply
   1,339.56x = 2,008.82 × 927.45
4. Step 4: Simplify right side
   1,339.56x = 1,863,082.43
5. Step 5: Solve for x
   x = 1,863,082.43/1,339.56
6. Step 6: Final answer
   x = 1,390.82