Finding the Fourth Proportional to 2,091.33, 3,135.37 and 1,212.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.33 : 3,135.37 = 1,212.48 : x
2. Step 2: Convert to fraction form
   2,091.33/3,135.37 = 1,212.48/x
3. Step 3: Cross multiply
   2,091.33x = 3,135.37 × 1,212.48
4. Step 4: Simplify right side
   2,091.33x = 3,801,554.71
5. Step 5: Solve for x
   x = 3,801,554.71/2,091.33
6. Step 6: Final answer
   x = 1,817.77