Finding the Fourth Proportional to 2,093.55, 3,139.41 and 1,052.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,093.55 : 3,139.41 = 1,052.90 : x
2. Step 2: Convert to fraction form
   2,093.55/3,139.41 = 1,052.90/x
3. Step 3: Cross multiply
   2,093.55x = 3,139.41 × 1,052.90
4. Step 4: Simplify right side
   2,093.55x = 3,305,496.59
5. Step 5: Solve for x
   x = 3,305,496.59/2,093.55
6. Step 6: Final answer
   x = 1,578.90