Finding the Fourth Proportional to 1,891.80, 2,610.71 and 1,052.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,891.80 : 2,610.71 = 1,052.59 : x
2. Step 2: Convert to fraction form
   1,891.80/2,610.71 = 1,052.59/x
3. Step 3: Cross multiply
   1,891.80x = 2,610.71 × 1,052.59
4. Step 4: Simplify right side
   1,891.80x = 2,748,001.98
5. Step 5: Solve for x
   x = 2,748,001.98/1,891.80
6. Step 6: Final answer
   x = 1,452.59