Finding the Fourth Proportional to 1,973.20, 2,679.52 and 1,973.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,973.20 : 2,679.52 = 1,973.20 : x
2. Step 2: Convert to fraction form
   1,973.20/2,679.52 = 1,973.20/x
3. Step 3: Cross multiply
   1,973.20x = 2,679.52 × 1,973.20
4. Step 4: Simplify right side
   1,973.20x = 5,287,228.86
5. Step 5: Solve for x
   x = 5,287,228.86/1,973.20
6. Step 6: Final answer
   x = 2,679.52