Finding the Fourth Proportional to 2,100.54, 2,899.02 and 1,216.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.54 : 2,899.02 = 1,216.62 : x
2. Step 2: Convert to fraction form
   2,100.54/2,899.02 = 1,216.62/x
3. Step 3: Cross multiply
   2,100.54x = 2,899.02 × 1,216.62
4. Step 4: Simplify right side
   2,100.54x = 3,527,005.71
5. Step 5: Solve for x
   x = 3,527,005.71/2,100.54
6. Step 6: Final answer
   x = 1,679.09