Finding the Fourth Proportional to 1,333.80, 1,998.54 and 900.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.80 : 1,998.54 = 900.18 : x
2. Step 2: Convert to fraction form
   1,333.80/1,998.54 = 900.18/x
3. Step 3: Cross multiply
   1,333.80x = 1,998.54 × 900.18
4. Step 4: Simplify right side
   1,333.80x = 1,799,045.74
5. Step 5: Solve for x
   x = 1,799,045.74/1,333.80
6. Step 6: Final answer
   x = 1,348.81