Finding the Fourth Proportional to 1,870.24, 2,581.12 and 1,282.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.24 : 2,581.12 = 1,282.72 : x
2. Step 2: Convert to fraction form
   1,870.24/2,581.12 = 1,282.72/x
3. Step 3: Cross multiply
   1,870.24x = 2,581.12 × 1,282.72
4. Step 4: Simplify right side
   1,870.24x = 3,310,854.25
5. Step 5: Solve for x
   x = 3,310,854.25/1,870.24
6. Step 6: Final answer
   x = 1,770.28