Finding the Fourth Proportional to 2,214.32, 3,055.88 and 1,219.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,214.32 : 3,055.88 = 1,219.72 : x
2. Step 2: Convert to fraction form
   2,214.32/3,055.88 = 1,219.72/x
3. Step 3: Cross multiply
   2,214.32x = 3,055.88 × 1,219.72
4. Step 4: Simplify right side
   2,214.32x = 3,727,317.95
5. Step 5: Solve for x
   x = 3,727,317.95/2,214.32
6. Step 6: Final answer
   x = 1,683.28