Finding the Fourth Proportional to 1,372.86, 1,893.68 and 841.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.86 : 1,893.68 = 841.50 : x
2. Step 2: Convert to fraction form
   1,372.86/1,893.68 = 841.50/x
3. Step 3: Cross multiply
   1,372.86x = 1,893.68 × 841.50
4. Step 4: Simplify right side
   1,372.86x = 1,593,531.72
5. Step 5: Solve for x
   x = 1,593,531.72/1,372.86
6. Step 6: Final answer
   x = 1,160.74