Finding the Fourth Proportional to 1,522.62, 2,099.79 and 997.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.62 : 2,099.79 = 997.74 : x
2. Step 2: Convert to fraction form
   1,522.62/2,099.79 = 997.74/x
3. Step 3: Cross multiply
   1,522.62x = 2,099.79 × 997.74
4. Step 4: Simplify right side
   1,522.62x = 2,095,044.47
5. Step 5: Solve for x
   x = 2,095,044.47/1,522.62
6. Step 6: Final answer
   x = 1,375.95