Finding the Fourth Proportional to 1,500.78, 2,250.84 and 404.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,500.78 : 2,250.84 = 404.88 : x
2. Step 2: Convert to fraction form
   1,500.78/2,250.84 = 404.88/x
3. Step 3: Cross multiply
   1,500.78x = 2,250.84 × 404.88
4. Step 4: Simplify right side
   1,500.78x = 911,320.10
5. Step 5: Solve for x
   x = 911,320.10/1,500.78
6. Step 6: Final answer
   x = 607.23