Finding the Fourth Proportional to 2,766.30, 4,152.15 and 1,381.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,766.30 : 4,152.15 = 1,381.20 : x
2. Step 2: Convert to fraction form
   2,766.30/4,152.15 = 1,381.20/x
3. Step 3: Cross multiply
   2,766.30x = 4,152.15 × 1,381.20
4. Step 4: Simplify right side
   2,766.30x = 5,734,949.58
5. Step 5: Solve for x
   x = 5,734,949.58/2,766.30
6. Step 6: Final answer
   x = 2,073.15