Finding the Fourth Proportional to 1,560.50, 2,331.60 and 1,505.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,560.50 : 2,331.60 = 1,505.99 : x
2. Step 2: Convert to fraction form
   1,560.50/2,331.60 = 1,505.99/x
3. Step 3: Cross multiply
   1,560.50x = 2,331.60 × 1,505.99
4. Step 4: Simplify right side
   1,560.50x = 3,511,366.28
5. Step 5: Solve for x
   x = 3,511,366.28/1,560.50
6. Step 6: Final answer
   x = 2,250.15