Finding the Fourth Proportional to 2,379.63, 3,283.89 and 1,317.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.63 : 3,283.89 = 1,317.47 : x
2. Step 2: Convert to fraction form
   2,379.63/3,283.89 = 1,317.47/x
3. Step 3: Cross multiply
   2,379.63x = 3,283.89 × 1,317.47
4. Step 4: Simplify right side
   2,379.63x = 4,326,427.39
5. Step 5: Solve for x
   x = 4,326,427.39/2,379.63
6. Step 6: Final answer
   x = 1,818.11