Finding the Fourth Proportional to 1,401.08, 1,932.47 and 870.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.08 : 1,932.47 = 870.27 : x
2. Step 2: Convert to fraction form
   1,401.08/1,932.47 = 870.27/x
3. Step 3: Cross multiply
   1,401.08x = 1,932.47 × 870.27
4. Step 4: Simplify right side
   1,401.08x = 1,681,766.32
5. Step 5: Solve for x
   x = 1,681,766.32/1,401.08
6. Step 6: Final answer
   x = 1,200.34