Finding the Fourth Proportional to 2,139.46, 2,952.02 and 1,353.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.46 : 2,952.02 = 1,353.08 : x
2. Step 2: Convert to fraction form
   2,139.46/2,952.02 = 1,353.08/x
3. Step 3: Cross multiply
   2,139.46x = 2,952.02 × 1,353.08
4. Step 4: Simplify right side
   2,139.46x = 3,994,319.22
5. Step 5: Solve for x
   x = 3,994,319.22/2,139.46
6. Step 6: Final answer
   x = 1,866.98