Finding the Fourth Proportional to 2,077.59, 2,871.18 and 1,856.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.59 : 2,871.18 = 1,856.16 : x
2. Step 2: Convert to fraction form
   2,077.59/2,871.18 = 1,856.16/x
3. Step 3: Cross multiply
   2,077.59x = 2,871.18 × 1,856.16
4. Step 4: Simplify right side
   2,077.59x = 5,329,369.47
5. Step 5: Solve for x
   x = 5,329,369.47/2,077.59
6. Step 6: Final answer
   x = 2,565.16