Finding the Fourth Proportional to 2,219.86, 3,063.59 and 1,225.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.86 : 3,063.59 = 1,225.23 : x
2. Step 2: Convert to fraction form
   2,219.86/3,063.59 = 1,225.23/x
3. Step 3: Cross multiply
   2,219.86x = 3,063.59 × 1,225.23
4. Step 4: Simplify right side
   2,219.86x = 3,753,602.38
5. Step 5: Solve for x
   x = 3,753,602.38/2,219.86
6. Step 6: Final answer
   x = 1,690.92