Finding the Fourth Proportional to 1,356.78, 2,033.31 and 706.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.78 : 2,033.31 = 706.17 : x
2. Step 2: Convert to fraction form
   1,356.78/2,033.31 = 706.17/x
3. Step 3: Cross multiply
   1,356.78x = 2,033.31 × 706.17
4. Step 4: Simplify right side
   1,356.78x = 1,435,862.52
5. Step 5: Solve for x
   x = 1,435,862.52/1,356.78
6. Step 6: Final answer
   x = 1,058.29