Finding the Fourth Proportional to 1,776.56, 2,666.25 and 1,760.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,776.56 : 2,666.25 = 1,760.15 : x
2. Step 2: Convert to fraction form
   1,776.56/2,666.25 = 1,760.15/x
3. Step 3: Cross multiply
   1,776.56x = 2,666.25 × 1,760.15
4. Step 4: Simplify right side
   1,776.56x = 4,693,006.60
5. Step 5: Solve for x
   x = 4,693,006.60/1,776.56
6. Step 6: Final answer
   x = 2,641.63