Finding the Fourth Proportional to 2,101.31, 3,150.13 and 803.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.31 : 3,150.13 = 803.69 : x
2. Step 2: Convert to fraction form
   2,101.31/3,150.13 = 803.69/x
3. Step 3: Cross multiply
   2,101.31x = 3,150.13 × 803.69
4. Step 4: Simplify right side
   2,101.31x = 2,531,727.98
5. Step 5: Solve for x
   x = 2,531,727.98/2,101.31
6. Step 6: Final answer
   x = 1,204.83