Finding the Fourth Proportional to 1,371.83, 1,892.61 and 874.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.83 : 1,892.61 = 874.68 : x
2. Step 2: Convert to fraction form
   1,371.83/1,892.61 = 874.68/x
3. Step 3: Cross multiply
   1,371.83x = 1,892.61 × 874.68
4. Step 4: Simplify right side
   1,371.83x = 1,655,428.11
5. Step 5: Solve for x
   x = 1,655,428.11/1,371.83
6. Step 6: Final answer
   x = 1,206.73