Finding the Fourth Proportional to 1,978.55, 2,727.84 and 1,623.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.55 : 2,727.84 = 1,623.16 : x
2. Step 2: Convert to fraction form
   1,978.55/2,727.84 = 1,623.16/x
3. Step 3: Cross multiply
   1,978.55x = 2,727.84 × 1,623.16
4. Step 4: Simplify right side
   1,978.55x = 4,427,720.77
5. Step 5: Solve for x
   x = 4,427,720.77/1,978.55
6. Step 6: Final answer
   x = 2,237.86