Finding the Fourth Proportional to 2,070.15, 3,103.20 and 1,029.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,070.15 : 3,103.20 = 1,029.30 : x
2. Step 2: Convert to fraction form
   2,070.15/3,103.20 = 1,029.30/x
3. Step 3: Cross multiply
   2,070.15x = 3,103.20 × 1,029.30
4. Step 4: Simplify right side
   2,070.15x = 3,194,123.76
5. Step 5: Solve for x
   x = 3,194,123.76/2,070.15
6. Step 6: Final answer
   x = 1,542.94