Finding the Fourth Proportional to 1,383.30, 2,073.15 and 998.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.30 : 2,073.15 = 998.10 : x
2. Step 2: Convert to fraction form
   1,383.30/2,073.15 = 998.10/x
3. Step 3: Cross multiply
   1,383.30x = 2,073.15 × 998.10
4. Step 4: Simplify right side
   1,383.30x = 2,069,211.02
5. Step 5: Solve for x
   x = 2,069,211.02/1,383.30
6. Step 6: Final answer
   x = 1,495.85