Finding the Fourth Proportional to 2,139.67, 2,952.95 and 1,300.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139.67 : 2,952.95 = 1,300.30 : x
2. Step 2: Convert to fraction form
   2,139.67/2,952.95 = 1,300.30/x
3. Step 3: Cross multiply
   2,139.67x = 2,952.95 × 1,300.30
4. Step 4: Simplify right side
   2,139.67x = 3,839,720.89
5. Step 5: Solve for x
   x = 3,839,720.89/2,139.67
6. Step 6: Final answer
   x = 1,794.54