Finding the Fourth Proportional to 1,865.89, 2,574.93 and 1,079.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.89 : 2,574.93 = 1,079.94 : x
2. Step 2: Convert to fraction form
   1,865.89/2,574.93 = 1,079.94/x
3. Step 3: Cross multiply
   1,865.89x = 2,574.93 × 1,079.94
4. Step 4: Simplify right side
   1,865.89x = 2,780,769.90
5. Step 5: Solve for x
   x = 2,780,769.90/1,865.89
6. Step 6: Final answer
   x = 1,490.32