Finding the Fourth Proportional to 2,634.93, 3,953.31 and 903.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,634.93 : 3,953.31 = 903.57 : x
2. Step 2: Convert to fraction form
   2,634.93/3,953.31 = 903.57/x
3. Step 3: Cross multiply
   2,634.93x = 3,953.31 × 903.57
4. Step 4: Simplify right side
   2,634.93x = 3,572,092.32
5. Step 5: Solve for x
   x = 3,572,092.32/2,634.93
6. Step 6: Final answer
   x = 1,355.67