Finding the Fourth Proportional to 1,371.33, 1,892.73 and 873.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.33 : 1,892.73 = 873.86 : x
2. Step 2: Convert to fraction form
   1,371.33/1,892.73 = 873.86/x
3. Step 3: Cross multiply
   1,371.33x = 1,892.73 × 873.86
4. Step 4: Simplify right side
   1,371.33x = 1,653,981.04
5. Step 5: Solve for x
   x = 1,653,981.04/1,371.33
6. Step 6: Final answer
   x = 1,206.11