Finding the Fourth Proportional to 2,635.57, 3,953.62 and 761.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.57 : 3,953.62 = 761.51 : x
2. Step 2: Convert to fraction form
   2,635.57/3,953.62 = 761.51/x
3. Step 3: Cross multiply
   2,635.57x = 3,953.62 × 761.51
4. Step 4: Simplify right side
   2,635.57x = 3,010,701.40
5. Step 5: Solve for x
   x = 3,010,701.40/2,635.57
6. Step 6: Final answer
   x = 1,142.33