Finding the Fourth Proportional to 2,630.55, 3,936.70 and 1,901.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.55 : 3,936.70 = 1,901.55 : x
2. Step 2: Convert to fraction form
   2,630.55/3,936.70 = 1,901.55/x
3. Step 3: Cross multiply
   2,630.55x = 3,936.70 × 1,901.55
4. Step 4: Simplify right side
   2,630.55x = 7,485,831.89
5. Step 5: Solve for x
   x = 7,485,831.89/2,630.55
6. Step 6: Final answer
   x = 2,845.73