Finding the Fourth Proportional to 1,560.78, 2,339.25 and 983.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560.78 : 2,339.25 = 983.82 : x
2. Step 2: Convert to fraction form
   1,560.78/2,339.25 = 983.82/x
3. Step 3: Cross multiply
   1,560.78x = 2,339.25 × 983.82
4. Step 4: Simplify right side
   1,560.78x = 2,301,400.94
5. Step 5: Solve for x
   x = 2,301,400.94/1,560.78
6. Step 6: Final answer
   x = 1,474.52