Finding the Fourth Proportional to 2,270.90, 3,133.89 and 1,262.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,270.90 : 3,133.89 = 1,262.63 : x
2. Step 2: Convert to fraction form
   2,270.90/3,133.89 = 1,262.63/x
3. Step 3: Cross multiply
   2,270.90x = 3,133.89 × 1,262.63
4. Step 4: Simplify right side
   2,270.90x = 3,956,927.86
5. Step 5: Solve for x
   x = 3,956,927.86/2,270.90
6. Step 6: Final answer
   x = 1,742.45