Finding the Fourth Proportional to 1,003.50, 1,506.78 and 954.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.50 : 1,506.78 = 954.18 : x
2. Step 2: Convert to fraction form
   1,003.50/1,506.78 = 954.18/x
3. Step 3: Cross multiply
   1,003.50x = 1,506.78 × 954.18
4. Step 4: Simplify right side
   1,003.50x = 1,437,739.34
5. Step 5: Solve for x
   x = 1,437,739.34/1,003.50
6. Step 6: Final answer
   x = 1,432.72