Finding the Fourth Proportional to 1,598.72, 2,206.23 and 900.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,598.72 : 2,206.23 = 900.09 : x
2. Step 2: Convert to fraction form
   1,598.72/2,206.23 = 900.09/x
3. Step 3: Cross multiply
   1,598.72x = 2,206.23 × 900.09
4. Step 4: Simplify right side
   1,598.72x = 1,985,805.56
5. Step 5: Solve for x
   x = 1,985,805.56/1,598.72
6. Step 6: Final answer
   x = 1,242.13