Finding the Fourth Proportional to 1,436.13, 1,982.88 and 1,142.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.13 : 1,982.88 = 1,142.10 : x
2. Step 2: Convert to fraction form
   1,436.13/1,982.88 = 1,142.10/x
3. Step 3: Cross multiply
   1,436.13x = 1,982.88 × 1,142.10
4. Step 4: Simplify right side
   1,436.13x = 2,264,647.25
5. Step 5: Solve for x
   x = 2,264,647.25/1,436.13
6. Step 6: Final answer
   x = 1,576.91