Finding the Fourth Proportional to 2,345.84, 3,516.42 and 1,306.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.84 : 3,516.42 = 1,306.31 : x
2. Step 2: Convert to fraction form
   2,345.84/3,516.42 = 1,306.31/x
3. Step 3: Cross multiply
   2,345.84x = 3,516.42 × 1,306.31
4. Step 4: Simplify right side
   2,345.84x = 4,593,534.61
5. Step 5: Solve for x
   x = 4,593,534.61/2,345.84
6. Step 6: Final answer
   x = 1,958.17