Finding the Fourth Proportional to 2,139.09, 2,952.27 and 1,299.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.09 : 2,952.27 = 1,299.93 : x
2. Step 2: Convert to fraction form
   2,139.09/2,952.27 = 1,299.93/x
3. Step 3: Cross multiply
   2,139.09x = 2,952.27 × 1,299.93
4. Step 4: Simplify right side
   2,139.09x = 3,837,744.34
5. Step 5: Solve for x
   x = 3,837,744.34/2,139.09
6. Step 6: Final answer
   x = 1,794.10