Finding the Fourth Proportional to 2,317.86, 3,478.62 and 1,222.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,317.86 : 3,478.62 = 1,222.62 : x
2. Step 2: Convert to fraction form
   2,317.86/3,478.62 = 1,222.62/x
3. Step 3: Cross multiply
   2,317.86x = 3,478.62 × 1,222.62
4. Step 4: Simplify right side
   2,317.86x = 4,253,030.38
5. Step 5: Solve for x
   x = 4,253,030.38/2,317.86
6. Step 6: Final answer
   x = 1,834.90