Finding the Fourth Proportional to 1,725.91, 2,588.42 and 800.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,725.91 : 2,588.42 = 800.56 : x
2. Step 2: Convert to fraction form
   1,725.91/2,588.42 = 800.56/x
3. Step 3: Cross multiply
   1,725.91x = 2,588.42 × 800.56
4. Step 4: Simplify right side
   1,725.91x = 2,072,185.52
5. Step 5: Solve for x
   x = 2,072,185.52/1,725.91
6. Step 6: Final answer
   x = 1,200.63