Finding the Fourth Proportional to 1,948.72, 2,689.30 and 1,064.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,948.72 : 2,689.30 = 1,064.59 : x
2. Step 2: Convert to fraction form
   1,948.72/2,689.30 = 1,064.59/x
3. Step 3: Cross multiply
   1,948.72x = 2,689.30 × 1,064.59
4. Step 4: Simplify right side
   1,948.72x = 2,862,992.50
5. Step 5: Solve for x
   x = 2,862,992.50/1,948.72
6. Step 6: Final answer
   x = 1,469.17