Finding the Fourth Proportional to 2,307.47, 3,184.09 and 1,312.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,307.47 : 3,184.09 = 1,312.69 : x
2. Step 2: Convert to fraction form
   2,307.47/3,184.09 = 1,312.69/x
3. Step 3: Cross multiply
   2,307.47x = 3,184.09 × 1,312.69
4. Step 4: Simplify right side
   2,307.47x = 4,179,723.10
5. Step 5: Solve for x
   x = 4,179,723.10/2,307.47
6. Step 6: Final answer
   x = 1,811.39