Finding the Fourth Proportional to 1,336.57, 1,845.30 and 1,002.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.57 : 1,845.30 = 1,002.31 : x
2. Step 2: Convert to fraction form
   1,336.57/1,845.30 = 1,002.31/x
3. Step 3: Cross multiply
   1,336.57x = 1,845.30 × 1,002.31
4. Step 4: Simplify right side
   1,336.57x = 1,849,562.64
5. Step 5: Solve for x
   x = 1,849,562.64/1,336.57
6. Step 6: Final answer
   x = 1,383.81