Finding the Fourth Proportional to 1,372.74, 1,894.25 and 841.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.74 : 1,894.25 = 841.43 : x
2. Step 2: Convert to fraction form
   1,372.74/1,894.25 = 841.43/x
3. Step 3: Cross multiply
   1,372.74x = 1,894.25 × 841.43
4. Step 4: Simplify right side
   1,372.74x = 1,593,865.10
5. Step 5: Solve for x
   x = 1,593,865.10/1,372.74
6. Step 6: Final answer
   x = 1,161.08