Finding the Fourth Proportional to 1,865.30, 2,573.51 and 1,079.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.30 : 2,573.51 = 1,079.19 : x
2. Step 2: Convert to fraction form
   1,865.30/2,573.51 = 1,079.19/x
3. Step 3: Cross multiply
   1,865.30x = 2,573.51 × 1,079.19
4. Step 4: Simplify right side
   1,865.30x = 2,777,300.86
5. Step 5: Solve for x
   x = 2,777,300.86/1,865.30
6. Step 6: Final answer
   x = 1,488.93