Finding the Fourth Proportional to 1,646.71, 2,272.52 and 900.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.71 : 2,272.52 = 900.70 : x
2. Step 2: Convert to fraction form
   1,646.71/2,272.52 = 900.70/x
3. Step 3: Cross multiply
   1,646.71x = 2,272.52 × 900.70
4. Step 4: Simplify right side
   1,646.71x = 2,046,855.33
5. Step 5: Solve for x
   x = 2,046,855.33/1,646.71
6. Step 6: Final answer
   x = 1,243.00