Finding the Fourth Proportional to 5,979.83, 8,969.94 and 1,978.02

Step by Step Solution

1. Step 1: Write the proportion equation
   5,979.83 : 8,969.94 = 1,978.02 : x
2. Step 2: Convert to fraction form
   5,979.83/8,969.94 = 1,978.02/x
3. Step 3: Cross multiply
   5,979.83x = 8,969.94 × 1,978.02
4. Step 4: Simplify right side
   5,979.83x = 17,742,720.72
5. Step 5: Solve for x
   x = 17,742,720.72/5,979.83
6. Step 6: Final answer
   x = 2,967.10