Finding the Fourth Proportional to 2,665.64, 3,999.05 and 1,022.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.64 : 3,999.05 = 1,022.18 : x
2. Step 2: Convert to fraction form
   2,665.64/3,999.05 = 1,022.18/x
3. Step 3: Cross multiply
   2,665.64x = 3,999.05 × 1,022.18
4. Step 4: Simplify right side
   2,665.64x = 4,087,753.82
5. Step 5: Solve for x
   x = 4,087,753.82/2,665.64
6. Step 6: Final answer
   x = 1,533.50