Finding the Fourth Proportional to 1,575.33, 2,173.82 and 912.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,575.33 : 2,173.82 = 912.35 : x
2. Step 2: Convert to fraction form
   1,575.33/2,173.82 = 912.35/x
3. Step 3: Cross multiply
   1,575.33x = 2,173.82 × 912.35
4. Step 4: Simplify right side
   1,575.33x = 1,983,269.25
5. Step 5: Solve for x
   x = 1,983,269.25/1,575.33
6. Step 6: Final answer
   x = 1,258.95