Finding the Fourth Proportional to 1,042.43, 1,554.82 and 904.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,042.43 : 1,554.82 = 904.38 : x
2. Step 2: Convert to fraction form
   1,042.43/1,554.82 = 904.38/x
3. Step 3: Cross multiply
   1,042.43x = 1,554.82 × 904.38
4. Step 4: Simplify right side
   1,042.43x = 1,406,148.11
5. Step 5: Solve for x
   x = 1,406,148.11/1,042.43
6. Step 6: Final answer
   x = 1,348.91