Finding the Fourth Proportional to 1,152.23, 1,590.15 and 654.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.23 : 1,590.15 = 654.68 : x
2. Step 2: Convert to fraction form
   1,152.23/1,590.15 = 654.68/x
3. Step 3: Cross multiply
   1,152.23x = 1,590.15 × 654.68
4. Step 4: Simplify right side
   1,152.23x = 1,041,039.40
5. Step 5: Solve for x
   x = 1,041,039.40/1,152.23
6. Step 6: Final answer
   x = 903.50