Finding the Fourth Proportional to 2,603.76, 3,903.93 and 1,042.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.76 : 3,903.93 = 1,042.62 : x
2. Step 2: Convert to fraction form
   2,603.76/3,903.93 = 1,042.62/x
3. Step 3: Cross multiply
   2,603.76x = 3,903.93 × 1,042.62
4. Step 4: Simplify right side
   2,603.76x = 4,070,315.50
5. Step 5: Solve for x
   x = 4,070,315.50/2,603.76
6. Step 6: Final answer
   x = 1,563.25