Finding the Fourth Proportional to 1,548.72, 2,322.72 and 900

Step by Step Solution

1. Step 1: Write the proportion equation
   1,548.72 : 2,322.72 = 900 : x
2. Step 2: Convert to fraction form
   1,548.72/2,322.72 = 900/x
3. Step 3: Cross multiply
   1,548.72x = 2,322.72 × 900
4. Step 4: Simplify right side
   1,548.72x = 2,090,448.00
5. Step 5: Solve for x
   x = 2,090,448.00/1,548.72
6. Step 6: Final answer
   x = 1,349.79