Finding the Fourth Proportional to 2,602.42, 3,900.76 and 1,042.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.42 : 3,900.76 = 1,042.04 : x
2. Step 2: Convert to fraction form
   2,602.42/3,900.76 = 1,042.04/x
3. Step 3: Cross multiply
   2,602.42x = 3,900.76 × 1,042.04
4. Step 4: Simplify right side
   2,602.42x = 4,064,747.95
5. Step 5: Solve for x
   x = 4,064,747.95/2,602.42
6. Step 6: Final answer
   x = 1,561.91