Finding the Fourth Proportional to 1,356.58, 1,868.58 and 1,061.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.58 : 1,868.58 = 1,061.32 : x
2. Step 2: Convert to fraction form
   1,356.58/1,868.58 = 1,061.32/x
3. Step 3: Cross multiply
   1,356.58x = 1,868.58 × 1,061.32
4. Step 4: Simplify right side
   1,356.58x = 1,983,161.33
5. Step 5: Solve for x
   x = 1,983,161.33/1,356.58
6. Step 6: Final answer
   x = 1,461.88