Finding the Fourth Proportional to 2,199.66, 3,300.57 and 901.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,199.66 : 3,300.57 = 901.50 : x
2. Step 2: Convert to fraction form
   2,199.66/3,300.57 = 901.50/x
3. Step 3: Cross multiply
   2,199.66x = 3,300.57 × 901.50
4. Step 4: Simplify right side
   2,199.66x = 2,975,463.86
5. Step 5: Solve for x
   x = 2,975,463.86/2,199.66
6. Step 6: Final answer
   x = 1,352.69