Finding the Fourth Proportional to 2,379.69, 3,284.25 and 1,385.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.69 : 3,284.25 = 1,385.01 : x
2. Step 2: Convert to fraction form
   2,379.69/3,284.25 = 1,385.01/x
3. Step 3: Cross multiply
   2,379.69x = 3,284.25 × 1,385.01
4. Step 4: Simplify right side
   2,379.69x = 4,548,719.09
5. Step 5: Solve for x
   x = 4,548,719.09/2,379.69
6. Step 6: Final answer
   x = 1,911.48