Finding the Fourth Proportional to 1,002.15, 1,499.53 and 607.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.15 : 1,499.53 = 607.06 : x
2. Step 2: Convert to fraction form
   1,002.15/1,499.53 = 607.06/x
3. Step 3: Cross multiply
   1,002.15x = 1,499.53 × 607.06
4. Step 4: Simplify right side
   1,002.15x = 910,299.42
5. Step 5: Solve for x
   x = 910,299.42/1,002.15
6. Step 6: Final answer
   x = 908.35