Finding the Fourth Proportional to 2,309.56, 3,465.12 and 992.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309.56 : 3,465.12 = 992.71 : x
2. Step 2: Convert to fraction form
   2,309.56/3,465.12 = 992.71/x
3. Step 3: Cross multiply
   2,309.56x = 3,465.12 × 992.71
4. Step 4: Simplify right side
   2,309.56x = 3,439,859.28
5. Step 5: Solve for x
   x = 3,439,859.28/2,309.56
6. Step 6: Final answer
   x = 1,489.40