Finding the Fourth Proportional to 2,219.81, 3,063.32 and 1,225.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.81 : 3,063.32 = 1,225.02 : x
2. Step 2: Convert to fraction form
   2,219.81/3,063.32 = 1,225.02/x
3. Step 3: Cross multiply
   2,219.81x = 3,063.32 × 1,225.02
4. Step 4: Simplify right side
   2,219.81x = 3,752,638.22
5. Step 5: Solve for x
   x = 3,752,638.22/2,219.81
6. Step 6: Final answer
   x = 1,690.53