Finding the Fourth Proportional to 1,972.30, 2,684.52 and 1,972.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,972.30 : 2,684.52 = 1,972.30 : x
2. Step 2: Convert to fraction form
   1,972.30/2,684.52 = 1,972.30/x
3. Step 3: Cross multiply
   1,972.30x = 2,684.52 × 1,972.30
4. Step 4: Simplify right side
   1,972.30x = 5,294,678.80
5. Step 5: Solve for x
   x = 5,294,678.80/1,972.30
6. Step 6: Final answer
   x = 2,684.52