Finding the Fourth Proportional to 1,016.42, 1,526.70 and 670.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016.42 : 1,526.70 = 670.25 : x
2. Step 2: Convert to fraction form
   1,016.42/1,526.70 = 670.25/x
3. Step 3: Cross multiply
   1,016.42x = 1,526.70 × 670.25
4. Step 4: Simplify right side
   1,016.42x = 1,023,263.04
5. Step 5: Solve for x
   x = 1,023,263.04/1,016.42
6. Step 6: Final answer
   x = 1,006.74