Finding the Fourth Proportional to 2,055.15, 2,838.18 and 1,309.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,055.15 : 2,838.18 = 1,309.46 : x
2. Step 2: Convert to fraction form
   2,055.15/2,838.18 = 1,309.46/x
3. Step 3: Cross multiply
   2,055.15x = 2,838.18 × 1,309.46
4. Step 4: Simplify right side
   2,055.15x = 3,716,468.99
5. Step 5: Solve for x
   x = 3,716,468.99/2,055.15
6. Step 6: Final answer
   x = 1,808.37