Finding the Fourth Proportional to 2,391.90, 3,588.54 and 1,004.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.90 : 3,588.54 = 1,004.50 : x
2. Step 2: Convert to fraction form
   2,391.90/3,588.54 = 1,004.50/x
3. Step 3: Cross multiply
   2,391.90x = 3,588.54 × 1,004.50
4. Step 4: Simplify right side
   2,391.90x = 3,604,688.43
5. Step 5: Solve for x
   x = 3,604,688.43/2,391.90
6. Step 6: Final answer
   x = 1,507.04