Finding the Fourth Proportional to 2,016.59, 3,025.24 and 921.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.59 : 3,025.24 = 921.06 : x
2. Step 2: Convert to fraction form
   2,016.59/3,025.24 = 921.06/x
3. Step 3: Cross multiply
   2,016.59x = 3,025.24 × 921.06
4. Step 4: Simplify right side
   2,016.59x = 2,786,430.51
5. Step 5: Solve for x
   x = 2,786,430.51/2,016.59
6. Step 6: Final answer
   x = 1,381.76