Finding the Fourth Proportional to 1,592.15, 2,388.74 and 667.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,592.15 : 2,388.74 = 667.98 : x
2. Step 2: Convert to fraction form
   1,592.15/2,388.74 = 667.98/x
3. Step 3: Cross multiply
   1,592.15x = 2,388.74 × 667.98
4. Step 4: Simplify right side
   1,592.15x = 1,595,627.21
5. Step 5: Solve for x
   x = 1,595,627.21/1,592.15
6. Step 6: Final answer
   x = 1,002.19