Finding the Fourth Proportional to 1,513.47, 2,090.18 and 1,042.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.47 : 2,090.18 = 1,042.59 : x
2. Step 2: Convert to fraction form
   1,513.47/2,090.18 = 1,042.59/x
3. Step 3: Cross multiply
   1,513.47x = 2,090.18 × 1,042.59
4. Step 4: Simplify right side
   1,513.47x = 2,179,195.55
5. Step 5: Solve for x
   x = 2,179,195.55/1,513.47
6. Step 6: Final answer
   x = 1,439.87