Finding the Fourth Proportional to 1,290.06, 1,934.77 and 903.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,290.06 : 1,934.77 = 903.52 : x
2. Step 2: Convert to fraction form
   1,290.06/1,934.77 = 903.52/x
3. Step 3: Cross multiply
   1,290.06x = 1,934.77 × 903.52
4. Step 4: Simplify right side
   1,290.06x = 1,748,093.72
5. Step 5: Solve for x
   x = 1,748,093.72/1,290.06
6. Step 6: Final answer
   x = 1,355.05