Finding the Fourth Proportional to 3,391.75, 5,085.79 and 1,050.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,391.75 : 5,085.79 = 1,050.74 : x
2. Step 2: Convert to fraction form
   3,391.75/5,085.79 = 1,050.74/x
3. Step 3: Cross multiply
   3,391.75x = 5,085.79 × 1,050.74
4. Step 4: Simplify right side
   3,391.75x = 5,343,862.61
5. Step 5: Solve for x
   x = 5,343,862.61/3,391.75
6. Step 6: Final answer
   x = 1,575.55