Finding the Fourth Proportional to 1,948.31, 2,688.71 and 1,064.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,948.31 : 2,688.71 = 1,064.12 : x
2. Step 2: Convert to fraction form
   1,948.31/2,688.71 = 1,064.12/x
3. Step 3: Cross multiply
   1,948.31x = 2,688.71 × 1,064.12
4. Step 4: Simplify right side
   1,948.31x = 2,861,109.38
5. Step 5: Solve for x
   x = 2,861,109.38/1,948.31
6. Step 6: Final answer
   x = 1,468.51