Finding the Fourth Proportional to 1,856.76, 2,796.16 and 1,616.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.76 : 2,796.16 = 1,616.20 : x
2. Step 2: Convert to fraction form
   1,856.76/2,796.16 = 1,616.20/x
3. Step 3: Cross multiply
   1,856.76x = 2,796.16 × 1,616.20
4. Step 4: Simplify right side
   1,856.76x = 4,519,153.79
5. Step 5: Solve for x
   x = 4,519,153.79/1,856.76
6. Step 6: Final answer
   x = 2,433.89