Finding the Fourth Proportional to 1,978.56, 2,974.32 and 1,654.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.56 : 2,974.32 = 1,654.56 : x
2. Step 2: Convert to fraction form
   1,978.56/2,974.32 = 1,654.56/x
3. Step 3: Cross multiply
   1,978.56x = 2,974.32 × 1,654.56
4. Step 4: Simplify right side
   1,978.56x = 4,921,190.90
5. Step 5: Solve for x
   x = 4,921,190.90/1,978.56
6. Step 6: Final answer
   x = 2,487.26