Finding the Fourth Proportional to 3,131.89, 4,698.23 and 1,052.11

Step by Step Solution

1. Step 1: Write the proportion equation
   3,131.89 : 4,698.23 = 1,052.11 : x
2. Step 2: Convert to fraction form
   3,131.89/4,698.23 = 1,052.11/x
3. Step 3: Cross multiply
   3,131.89x = 4,698.23 × 1,052.11
4. Step 4: Simplify right side
   3,131.89x = 4,943,071.55
5. Step 5: Solve for x
   x = 4,943,071.55/3,131.89
6. Step 6: Final answer
   x = 1,578.30