Finding the Fourth Proportional to 2,101.59, 2,900.06 and 1,217.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.59 : 2,900.06 = 1,217.24 : x
2. Step 2: Convert to fraction form
   2,101.59/2,900.06 = 1,217.24/x
3. Step 3: Cross multiply
   2,101.59x = 2,900.06 × 1,217.24
4. Step 4: Simplify right side
   2,101.59x = 3,530,048.45
5. Step 5: Solve for x
   x = 3,530,048.45/2,101.59
6. Step 6: Final answer
   x = 1,679.70