Finding the Fourth Proportional to 3,507.96, 4,840.55 and 2,145.91

Step by Step Solution

1. Step 1: Write the proportion equation
   3,507.96 : 4,840.55 = 2,145.91 : x
2. Step 2: Convert to fraction form
   3,507.96/4,840.55 = 2,145.91/x
3. Step 3: Cross multiply
   3,507.96x = 4,840.55 × 2,145.91
4. Step 4: Simplify right side
   3,507.96x = 10,387,386.52
5. Step 5: Solve for x
   x = 10,387,386.52/3,507.96
6. Step 6: Final answer
   x = 2,961.09