Finding the Fourth Proportional to 2,156.48, 2,972.00 and 1,565.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156.48 : 2,972.00 = 1,565.99 : x
2. Step 2: Convert to fraction form
   2,156.48/2,972.00 = 1,565.99/x
3. Step 3: Cross multiply
   2,156.48x = 2,972.00 × 1,565.99
4. Step 4: Simplify right side
   2,156.48x = 4,654,114.45
5. Step 5: Solve for x
   x = 4,654,114.45/2,156.48
6. Step 6: Final answer
   x = 2,158.20