Finding the Fourth Proportional to 2,092.90, 2,888.72 and 1,209.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,092.90 : 2,888.72 = 1,209.24 : x
2. Step 2: Convert to fraction form
   2,092.90/2,888.72 = 1,209.24/x
3. Step 3: Cross multiply
   2,092.90x = 2,888.72 × 1,209.24
4. Step 4: Simplify right side
   2,092.90x = 3,493,155.77
5. Step 5: Solve for x
   x = 3,493,155.77/2,092.90
6. Step 6: Final answer
   x = 1,669.05