Finding the Fourth Proportional to 1,650.70, 2,478.62 and 1,422.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,650.70 : 2,478.62 = 1,422.15 : x
2. Step 2: Convert to fraction form
   1,650.70/2,478.62 = 1,422.15/x
3. Step 3: Cross multiply
   1,650.70x = 2,478.62 × 1,422.15
4. Step 4: Simplify right side
   1,650.70x = 3,524,969.43
5. Step 5: Solve for x
   x = 3,524,969.43/1,650.70
6. Step 6: Final answer
   x = 2,135.44