Finding the Fourth Proportional to 2,084.96, 3,127.17 and 990.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084.96 : 3,127.17 = 990.02 : x
2. Step 2: Convert to fraction form
   2,084.96/3,127.17 = 990.02/x
3. Step 3: Cross multiply
   2,084.96x = 3,127.17 × 990.02
4. Step 4: Simplify right side
   2,084.96x = 3,095,960.84
5. Step 5: Solve for x
   x = 3,095,960.84/2,084.96
6. Step 6: Final answer
   x = 1,484.90