Finding the Fourth Proportional to 3,153.69, 4,347.59 and 2,312.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,153.69 : 4,347.59 = 2,312.91 : x
2. Step 2: Convert to fraction form
   3,153.69/4,347.59 = 2,312.91/x
3. Step 3: Cross multiply
   3,153.69x = 4,347.59 × 2,312.91
4. Step 4: Simplify right side
   3,153.69x = 10,055,572.82
5. Step 5: Solve for x
   x = 10,055,572.82/3,153.69
6. Step 6: Final answer
   x = 3,188.51