Finding the Fourth Proportional to 1,891.45, 2,610.28 and 1,052.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,891.45 : 2,610.28 = 1,052.15 : x
2. Step 2: Convert to fraction form
   1,891.45/2,610.28 = 1,052.15/x
3. Step 3: Cross multiply
   1,891.45x = 2,610.28 × 1,052.15
4. Step 4: Simplify right side
   1,891.45x = 2,746,406.10
5. Step 5: Solve for x
   x = 2,746,406.10/1,891.45
6. Step 6: Final answer
   x = 1,452.01