Finding the Fourth Proportional to 2,074.32, 2,862.72 and 1,178.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.32 : 2,862.72 = 1,178.28 : x
2. Step 2: Convert to fraction form
   2,074.32/2,862.72 = 1,178.28/x
3. Step 3: Cross multiply
   2,074.32x = 2,862.72 × 1,178.28
4. Step 4: Simplify right side
   2,074.32x = 3,373,085.72
5. Step 5: Solve for x
   x = 3,373,085.72/2,074.32
6. Step 6: Final answer
   x = 1,626.12