Finding the Fourth Proportional to 1,859.49, 2,789.37 and 1,038.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,859.49 : 2,789.37 = 1,038.15 : x
2. Step 2: Convert to fraction form
   1,859.49/2,789.37 = 1,038.15/x
3. Step 3: Cross multiply
   1,859.49x = 2,789.37 × 1,038.15
4. Step 4: Simplify right side
   1,859.49x = 2,895,784.47
5. Step 5: Solve for x
   x = 2,895,784.47/1,859.49
6. Step 6: Final answer
   x = 1,557.30