Finding the Fourth Proportional to 1,575.82, 2,174.34 and 912.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,575.82 : 2,174.34 = 912.52 : x
2. Step 2: Convert to fraction form
   1,575.82/2,174.34 = 912.52/x
3. Step 3: Cross multiply
   1,575.82x = 2,174.34 × 912.52
4. Step 4: Simplify right side
   1,575.82x = 1,984,128.74
5. Step 5: Solve for x
   x = 1,984,128.74/1,575.82
6. Step 6: Final answer
   x = 1,259.11