Finding the Fourth Proportional to 2,196.48, 3,030.66 and 1,312.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.48 : 3,030.66 = 1,312.14 : x
2. Step 2: Convert to fraction form
   2,196.48/3,030.66 = 1,312.14/x
3. Step 3: Cross multiply
   2,196.48x = 3,030.66 × 1,312.14
4. Step 4: Simplify right side
   2,196.48x = 3,976,650.21
5. Step 5: Solve for x
   x = 3,976,650.21/2,196.48
6. Step 6: Final answer
   x = 1,810.47