Finding the Fourth Proportional to 2,196.24, 3,030.36 and 1,345.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.24 : 3,030.36 = 1,345.20 : x
2. Step 2: Convert to fraction form
   2,196.24/3,030.36 = 1,345.20/x
3. Step 3: Cross multiply
   2,196.24x = 3,030.36 × 1,345.20
4. Step 4: Simplify right side
   2,196.24x = 4,076,440.27
5. Step 5: Solve for x
   x = 4,076,440.27/2,196.24
6. Step 6: Final answer
   x = 1,856.10