Finding the Fourth Proportional to 2,612.52, 3,605.72 and 1,564.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.52 : 3,605.72 = 1,564.79 : x
2. Step 2: Convert to fraction form
   2,612.52/3,605.72 = 1,564.79/x
3. Step 3: Cross multiply
   2,612.52x = 3,605.72 × 1,564.79
4. Step 4: Simplify right side
   2,612.52x = 5,642,168.75
5. Step 5: Solve for x
   x = 5,642,168.75/2,612.52
6. Step 6: Final answer
   x = 2,159.67