Finding the Fourth Proportional to 1,865.46, 2,574.42 and 1,079.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.46 : 2,574.42 = 1,079.52 : x
2. Step 2: Convert to fraction form
   1,865.46/2,574.42 = 1,079.52/x
3. Step 3: Cross multiply
   1,865.46x = 2,574.42 × 1,079.52
4. Step 4: Simplify right side
   1,865.46x = 2,779,137.88
5. Step 5: Solve for x
   x = 2,779,137.88/1,865.46
6. Step 6: Final answer
   x = 1,489.79