Finding the Fourth Proportional to 1,646.55, 2,272.40 and 900.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.55 : 2,272.40 = 900.62 : x
2. Step 2: Convert to fraction form
   1,646.55/2,272.40 = 900.62/x
3. Step 3: Cross multiply
   1,646.55x = 2,272.40 × 900.62
4. Step 4: Simplify right side
   1,646.55x = 2,046,568.89
5. Step 5: Solve for x
   x = 2,046,568.89/1,646.55
6. Step 6: Final answer
   x = 1,242.94