Finding the Fourth Proportional to 1,003.08, 1,492.71 and 964.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.08 : 1,492.71 = 964.20 : x
2. Step 2: Convert to fraction form
   1,003.08/1,492.71 = 964.20/x
3. Step 3: Cross multiply
   1,003.08x = 1,492.71 × 964.20
4. Step 4: Simplify right side
   1,003.08x = 1,439,270.98
5. Step 5: Solve for x
   x = 1,439,270.98/1,003.08
6. Step 6: Final answer
   x = 1,434.85