Finding the Fourth Proportional to 1,333.10, 1,839.59 and 890.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.10 : 1,839.59 = 890.93 : x
2. Step 2: Convert to fraction form
   1,333.10/1,839.59 = 890.93/x
3. Step 3: Cross multiply
   1,333.10x = 1,839.59 × 890.93
4. Step 4: Simplify right side
   1,333.10x = 1,638,945.92
5. Step 5: Solve for x
   x = 1,638,945.92/1,333.10
6. Step 6: Final answer
   x = 1,229.42