Finding the Fourth Proportional to 2,146.69, 2,963.15 and 1,307.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.69 : 2,963.15 = 1,307.94 : x
2. Step 2: Convert to fraction form
   2,146.69/2,963.15 = 1,307.94/x
3. Step 3: Cross multiply
   2,146.69x = 2,963.15 × 1,307.94
4. Step 4: Simplify right side
   2,146.69x = 3,875,622.41
5. Step 5: Solve for x
   x = 3,875,622.41/2,146.69
6. Step 6: Final answer
   x = 1,805.39