Finding the Fourth Proportional to 1,773.81, 2,660.18 and 1,160.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,773.81 : 2,660.18 = 1,160.78 : x
2. Step 2: Convert to fraction form
   1,773.81/2,660.18 = 1,160.78/x
3. Step 3: Cross multiply
   1,773.81x = 2,660.18 × 1,160.78
4. Step 4: Simplify right side
   1,773.81x = 3,087,864.64
5. Step 5: Solve for x
   x = 3,087,864.64/1,773.81
6. Step 6: Final answer
   x = 1,740.81