Finding the Fourth Proportional to 1,865.63, 2,574.41 and 1,079.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.63 : 2,574.41 = 1,079.73 : x
2. Step 2: Convert to fraction form
   1,865.63/2,574.41 = 1,079.73/x
3. Step 3: Cross multiply
   1,865.63x = 2,574.41 × 1,079.73
4. Step 4: Simplify right side
   1,865.63x = 2,779,667.71
5. Step 5: Solve for x
   x = 2,779,667.71/1,865.63
6. Step 6: Final answer
   x = 1,489.94