Finding the Fourth Proportional to 1,371.84, 1,892.52 and 998.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,371.84 : 1,892.52 = 998.12 : x
2. Step 2: Convert to fraction form
   1,371.84/1,892.52 = 998.12/x
3. Step 3: Cross multiply
   1,371.84x = 1,892.52 × 998.12
4. Step 4: Simplify right side
   1,371.84x = 1,888,962.06
5. Step 5: Solve for x
   x = 1,888,962.06/1,371.84
6. Step 6: Final answer
   x = 1,376.96