Finding the Fourth Proportional to 1,543.96, 2,315.72 and 570.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,543.96 : 2,315.72 = 570.06 : x
2. Step 2: Convert to fraction form
   1,543.96/2,315.72 = 570.06/x
3. Step 3: Cross multiply
   1,543.96x = 2,315.72 × 570.06
4. Step 4: Simplify right side
   1,543.96x = 1,320,099.34
5. Step 5: Solve for x
   x = 1,320,099.34/1,543.96
6. Step 6: Final answer
   x = 855.01