Finding the Fourth Proportional to 1,138.30, 1,568.41 and 1,062.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,138.30 : 1,568.41 = 1,062.10 : x
2. Step 2: Convert to fraction form
   1,138.30/1,568.41 = 1,062.10/x
3. Step 3: Cross multiply
   1,138.30x = 1,568.41 × 1,062.10
4. Step 4: Simplify right side
   1,138.30x = 1,665,808.26
5. Step 5: Solve for x
   x = 1,665,808.26/1,138.30
6. Step 6: Final answer
   x = 1,463.42