Finding the Fourth Proportional to 1,760.78, 2,430.48 and 1,171.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,760.78 : 2,430.48 = 1,171.46 : x
2. Step 2: Convert to fraction form
   1,760.78/2,430.48 = 1,171.46/x
3. Step 3: Cross multiply
   1,760.78x = 2,430.48 × 1,171.46
4. Step 4: Simplify right side
   1,760.78x = 2,847,210.10
5. Step 5: Solve for x
   x = 2,847,210.10/1,760.78
6. Step 6: Final answer
   x = 1,617.02