Finding the Fourth Proportional to 1,926.37, 2,658.39 and 1,042.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,926.37 : 2,658.39 = 1,042.17 : x
2. Step 2: Convert to fraction form
   1,926.37/2,658.39 = 1,042.17/x
3. Step 3: Cross multiply
   1,926.37x = 2,658.39 × 1,042.17
4. Step 4: Simplify right side
   1,926.37x = 2,770,494.31
5. Step 5: Solve for x
   x = 2,770,494.31/1,926.37
6. Step 6: Final answer
   x = 1,438.19