Finding the Fourth Proportional to 1,948.38, 2,688.78 and 1,064.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,948.38 : 2,688.78 = 1,064.18 : x
2. Step 2: Convert to fraction form
   1,948.38/2,688.78 = 1,064.18/x
3. Step 3: Cross multiply
   1,948.38x = 2,688.78 × 1,064.18
4. Step 4: Simplify right side
   1,948.38x = 2,861,345.90
5. Step 5: Solve for x
   x = 2,861,345.90/1,948.38
6. Step 6: Final answer
   x = 1,468.58