Finding the Fourth Proportional to 1,948.77, 2,689.37 and 1,064.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,948.77 : 2,689.37 = 1,064.61 : x
2. Step 2: Convert to fraction form
   1,948.77/2,689.37 = 1,064.61/x
3. Step 3: Cross multiply
   1,948.77x = 2,689.37 × 1,064.61
4. Step 4: Simplify right side
   1,948.77x = 2,863,132.86
5. Step 5: Solve for x
   x = 2,863,132.86/1,948.77
6. Step 6: Final answer
   x = 1,469.20