Finding the Fourth Proportional to 2,379.77, 3,284.04 and 1,317.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.77 : 3,284.04 = 1,317.60 : x
2. Step 2: Convert to fraction form
   2,379.77/3,284.04 = 1,317.60/x
3. Step 3: Cross multiply
   2,379.77x = 3,284.04 × 1,317.60
4. Step 4: Simplify right side
   2,379.77x = 4,327,051.10
5. Step 5: Solve for x
   x = 4,327,051.10/2,379.77
6. Step 6: Final answer
   x = 1,818.27