Finding the Fourth Proportional to 2,870.93, 4,306.42 and 1,022.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,870.93 : 4,306.42 = 1,022.12 : x
2. Step 2: Convert to fraction form
   2,870.93/4,306.42 = 1,022.12/x
3. Step 3: Cross multiply
   2,870.93x = 4,306.42 × 1,022.12
4. Step 4: Simplify right side
   2,870.93x = 4,401,672.90
5. Step 5: Solve for x
   x = 4,401,672.90/2,870.93
6. Step 6: Final answer
   x = 1,533.19