Finding the Fourth Proportional to 1,978.59, 2,967.58 and 662.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,978.59 : 2,967.58 = 662.14 : x
2. Step 2: Convert to fraction form
   1,978.59/2,967.58 = 662.14/x
3. Step 3: Cross multiply
   1,978.59x = 2,967.58 × 662.14
4. Step 4: Simplify right side
   1,978.59x = 1,964,953.42
5. Step 5: Solve for x
   x = 1,964,953.42/1,978.59
6. Step 6: Final answer
   x = 993.11