Finding the Fourth Proportional to 2,391.91, 3,588.38 and 1,004.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.91 : 3,588.38 = 1,004.45 : x
2. Step 2: Convert to fraction form
   2,391.91/3,588.38 = 1,004.45/x
3. Step 3: Cross multiply
   2,391.91x = 3,588.38 × 1,004.45
4. Step 4: Simplify right side
   2,391.91x = 3,604,359.77
5. Step 5: Solve for x
   x = 3,604,359.77/2,391.91
6. Step 6: Final answer
   x = 1,506.90