Finding the Fourth Proportional to 2,148.84, 2,964.52 and 1,308.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.84 : 2,964.52 = 1,308.87 : x
2. Step 2: Convert to fraction form
   2,148.84/2,964.52 = 1,308.87/x
3. Step 3: Cross multiply
   2,148.84x = 2,964.52 × 1,308.87
4. Step 4: Simplify right side
   2,148.84x = 3,880,171.29
5. Step 5: Solve for x
   x = 3,880,171.29/2,148.84
6. Step 6: Final answer
   x = 1,805.71