Finding the Fourth Proportional to 1,646.37, 2,271.89 and 900.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.37 : 2,271.89 = 900.32 : x
2. Step 2: Convert to fraction form
   1,646.37/2,271.89 = 900.32/x
3. Step 3: Cross multiply
   1,646.37x = 2,271.89 × 900.32
4. Step 4: Simplify right side
   1,646.37x = 2,045,418.90
5. Step 5: Solve for x
   x = 2,045,418.90/1,646.37
6. Step 6: Final answer
   x = 1,242.38