Finding the Fourth Proportional to 1,646.18, 2,271.72 and 900.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.18 : 2,271.72 = 900.14 : x
2. Step 2: Convert to fraction form
   1,646.18/2,271.72 = 900.14/x
3. Step 3: Cross multiply
   1,646.18x = 2,271.72 × 900.14
4. Step 4: Simplify right side
   1,646.18x = 2,044,866.04
5. Step 5: Solve for x
   x = 2,044,866.04/1,646.18
6. Step 6: Final answer
   x = 1,242.19