Finding the Fourth Proportional to 2,196.02, 3,030.40 and 1,201.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.02 : 3,030.40 = 1,201.30 : x
2. Step 2: Convert to fraction form
   2,196.02/3,030.40 = 1,201.30/x
3. Step 3: Cross multiply
   2,196.02x = 3,030.40 × 1,201.30
4. Step 4: Simplify right side
   2,196.02x = 3,640,419.52
5. Step 5: Solve for x
   x = 3,640,419.52/2,196.02
6. Step 6: Final answer
   x = 1,657.74