Finding the Fourth Proportional to 2,591.69, 3,904.83 and 2,345.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,591.69 : 3,904.83 = 2,345.20 : x
2. Step 2: Convert to fraction form
   2,591.69/3,904.83 = 2,345.20/x
3. Step 3: Cross multiply
   2,591.69x = 3,904.83 × 2,345.20
4. Step 4: Simplify right side
   2,591.69x = 9,157,597.55
5. Step 5: Solve for x
   x = 9,157,597.55/2,591.69
6. Step 6: Final answer
   x = 3,533.45