Finding the Fourth Proportional to 2,196.35, 3,030.19 and 1,311.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.35 : 3,030.19 = 1,311.83 : x
2. Step 2: Convert to fraction form
   2,196.35/3,030.19 = 1,311.83/x
3. Step 3: Cross multiply
   2,196.35x = 3,030.19 × 1,311.83
4. Step 4: Simplify right side
   2,196.35x = 3,975,075.72
5. Step 5: Solve for x
   x = 3,975,075.72/2,196.35
6. Step 6: Final answer
   x = 1,809.86