Finding the Fourth Proportional to 2,131.25, 3,196.67 and 1,090.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,131.25 : 3,196.67 = 1,090.67 : x
2. Step 2: Convert to fraction form
   2,131.25/3,196.67 = 1,090.67/x
3. Step 3: Cross multiply
   2,131.25x = 3,196.67 × 1,090.67
4. Step 4: Simplify right side
   2,131.25x = 3,486,490.63
5. Step 5: Solve for x
   x = 3,486,490.63/2,131.25
6. Step 6: Final answer
   x = 1,635.89