Finding the Fourth Proportional to 2,300.50, 3,451.30 and 761.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.50 : 3,451.30 = 761.50 : x
2. Step 2: Convert to fraction form
   2,300.50/3,451.30 = 761.50/x
3. Step 3: Cross multiply
   2,300.50x = 3,451.30 × 761.50
4. Step 4: Simplify right side
   2,300.50x = 2,628,164.95
5. Step 5: Solve for x
   x = 2,628,164.95/2,300.50
6. Step 6: Final answer
   x = 1,142.43