Finding the Fourth Proportional to 2,145.69, 2,961.77 and 1,306.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.69 : 2,961.77 = 1,306.94 : x
2. Step 2: Convert to fraction form
   2,145.69/2,961.77 = 1,306.94/x
3. Step 3: Cross multiply
   2,145.69x = 2,961.77 × 1,306.94
4. Step 4: Simplify right side
   2,145.69x = 3,870,834.34
5. Step 5: Solve for x
   x = 3,870,834.34/2,145.69
6. Step 6: Final answer
   x = 1,804.00