Finding the Fourth Proportional to 1,522.10, 2,101.41 and 999.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.10 : 2,101.41 = 999.04 : x
2. Step 2: Convert to fraction form
   1,522.10/2,101.41 = 999.04/x
3. Step 3: Cross multiply
   1,522.10x = 2,101.41 × 999.04
4. Step 4: Simplify right side
   1,522.10x = 2,099,392.65
5. Step 5: Solve for x
   x = 2,099,392.65/1,522.10
6. Step 6: Final answer
   x = 1,379.27