Finding the Fourth Proportional to 2,573.48, 3,861.15 and 1,012.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,573.48 : 3,861.15 = 1,012.62 : x
2. Step 2: Convert to fraction form
   2,573.48/3,861.15 = 1,012.62/x
3. Step 3: Cross multiply
   2,573.48x = 3,861.15 × 1,012.62
4. Step 4: Simplify right side
   2,573.48x = 3,909,877.71
5. Step 5: Solve for x
   x = 3,909,877.71/2,573.48
6. Step 6: Final answer
   x = 1,519.30