Finding the Fourth Proportional to 2,158.74, 3,235.05 and 1,669.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.74 : 3,235.05 = 1,669.50 : x
2. Step 2: Convert to fraction form
   2,158.74/3,235.05 = 1,669.50/x
3. Step 3: Cross multiply
   2,158.74x = 3,235.05 × 1,669.50
4. Step 4: Simplify right side
   2,158.74x = 5,400,915.98
5. Step 5: Solve for x
   x = 5,400,915.98/2,158.74
6. Step 6: Final answer
   x = 2,501.88