Finding the Fourth Proportional to 1,362.60, 2,043.21 and 900.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,362.60 : 2,043.21 = 900.09 : x
2. Step 2: Convert to fraction form
   1,362.60/2,043.21 = 900.09/x
3. Step 3: Cross multiply
   1,362.60x = 2,043.21 × 900.09
4. Step 4: Simplify right side
   1,362.60x = 1,839,072.89
5. Step 5: Solve for x
   x = 1,839,072.89/1,362.60
6. Step 6: Final answer
   x = 1,349.68