Finding the Fourth Proportional to 2,406.31, 3,606.71 and 1,091.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406.31 : 3,606.71 = 1,091.06 : x
2. Step 2: Convert to fraction form
   2,406.31/3,606.71 = 1,091.06/x
3. Step 3: Cross multiply
   2,406.31x = 3,606.71 × 1,091.06
4. Step 4: Simplify right side
   2,406.31x = 3,935,131.56
5. Step 5: Solve for x
   x = 3,935,131.56/2,406.31
6. Step 6: Final answer
   x = 1,635.34