Finding the Fourth Proportional to 3,091.83, 4,636.72 and 900.64

Step by Step Solution

1. Step 1: Write the proportion equation
   3,091.83 : 4,636.72 = 900.64 : x
2. Step 2: Convert to fraction form
   3,091.83/4,636.72 = 900.64/x
3. Step 3: Cross multiply
   3,091.83x = 4,636.72 × 900.64
4. Step 4: Simplify right side
   3,091.83x = 4,176,015.50
5. Step 5: Solve for x
   x = 4,176,015.50/3,091.83
6. Step 6: Final answer
   x = 1,350.66