Finding the Fourth Proportional to 1,342.29, 1,853.27 and 838.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,342.29 : 1,853.27 = 838.91 : x
2. Step 2: Convert to fraction form
   1,342.29/1,853.27 = 838.91/x
3. Step 3: Cross multiply
   1,342.29x = 1,853.27 × 838.91
4. Step 4: Simplify right side
   1,342.29x = 1,554,713.27
5. Step 5: Solve for x
   x = 1,554,713.27/1,342.29
6. Step 6: Final answer
   x = 1,158.25