Finding the Fourth Proportional to 1,978.31, 2,967.59 and 662.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.31 : 2,967.59 = 662.00 : x
2. Step 2: Convert to fraction form
   1,978.31/2,967.59 = 662.00/x
3. Step 3: Cross multiply
   1,978.31x = 2,967.59 × 662.00
4. Step 4: Simplify right side
   1,978.31x = 1,964,531.40
5. Step 5: Solve for x
   x = 1,964,531.40/1,978.31
6. Step 6: Final answer
   x = 993.03