Finding the Fourth Proportional to 1,978.26, 2,727.46 and 1,622.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.26 : 2,727.46 = 1,622.90 : x
2. Step 2: Convert to fraction form
   1,978.26/2,727.46 = 1,622.90/x
3. Step 3: Cross multiply
   1,978.26x = 2,727.46 × 1,622.90
4. Step 4: Simplify right side
   1,978.26x = 4,426,394.83
5. Step 5: Solve for x
   x = 4,426,394.83/1,978.26
6. Step 6: Final answer
   x = 2,237.52