Finding the Fourth Proportional to 1,073.55, 1,611.53 and 1,003.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073.55 : 1,611.53 = 1,003.05 : x
2. Step 2: Convert to fraction form
   1,073.55/1,611.53 = 1,003.05/x
3. Step 3: Cross multiply
   1,073.55x = 1,611.53 × 1,003.05
4. Step 4: Simplify right side
   1,073.55x = 1,616,440.15
5. Step 5: Solve for x
   x = 1,616,440.15/1,073.55
6. Step 6: Final answer
   x = 1,505.70