Finding the Fourth Proportional to 2,148.93, 2,965.50 and 1,972.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.93 : 2,965.50 = 1,972.61 : x
2. Step 2: Convert to fraction form
   2,148.93/2,965.50 = 1,972.61/x
3. Step 3: Cross multiply
   2,148.93x = 2,965.50 × 1,972.61
4. Step 4: Simplify right side
   2,148.93x = 5,849,760.13
5. Step 5: Solve for x
   x = 5,849,760.13/2,148.93
6. Step 6: Final answer
   x = 2,722.17