Finding the Fourth Proportional to 2,406.81, 3,607.45 and 1,091.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,406.81 : 3,607.45 = 1,091.56 : x
2. Step 2: Convert to fraction form
   2,406.81/3,607.45 = 1,091.56/x
3. Step 3: Cross multiply
   2,406.81x = 3,607.45 × 1,091.56
4. Step 4: Simplify right side
   2,406.81x = 3,937,748.12
5. Step 5: Solve for x
   x = 3,937,748.12/2,406.81
6. Step 6: Final answer
   x = 1,636.09