Finding the Fourth Proportional to 1,856.49, 2,560.98 and 1,148.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.49 : 2,560.98 = 1,148.10 : x
2. Step 2: Convert to fraction form
   1,856.49/2,560.98 = 1,148.10/x
3. Step 3: Cross multiply
   1,856.49x = 2,560.98 × 1,148.10
4. Step 4: Simplify right side
   1,856.49x = 2,940,270.74
5. Step 5: Solve for x
   x = 2,940,270.74/1,856.49
6. Step 6: Final answer
   x = 1,583.78