Finding the Fourth Proportional to 2,861.42, 4,292.49 and 1,012.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,861.42 : 4,292.49 = 1,012.10 : x
2. Step 2: Convert to fraction form
   2,861.42/4,292.49 = 1,012.10/x
3. Step 3: Cross multiply
   2,861.42x = 4,292.49 × 1,012.10
4. Step 4: Simplify right side
   2,861.42x = 4,344,429.13
5. Step 5: Solve for x
   x = 4,344,429.13/2,861.42
6. Step 6: Final answer
   x = 1,518.28