Finding the Fourth Proportional to 1,978.96, 2,962.92 and 1,490.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.96 : 2,962.92 = 1,490.50 : x
2. Step 2: Convert to fraction form
   1,978.96/2,962.92 = 1,490.50/x
3. Step 3: Cross multiply
   1,978.96x = 2,962.92 × 1,490.50
4. Step 4: Simplify right side
   1,978.96x = 4,416,232.26
5. Step 5: Solve for x
   x = 4,416,232.26/1,978.96
6. Step 6: Final answer
   x = 2,231.59