Finding the Fourth Proportional to 3,515.89, 5,272.86 and 1,050.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,515.89 : 5,272.86 = 1,050.12 : x
2. Step 2: Convert to fraction form
   3,515.89/5,272.86 = 1,050.12/x
3. Step 3: Cross multiply
   3,515.89x = 5,272.86 × 1,050.12
4. Step 4: Simplify right side
   3,515.89x = 5,537,143.67
5. Step 5: Solve for x
   x = 5,537,143.67/3,515.89
6. Step 6: Final answer
   x = 1,574.89