Finding the Fourth Proportional to 1,083.60, 1,617.53 and 1,003.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.60 : 1,617.53 = 1,003.50 : x
2. Step 2: Convert to fraction form
   1,083.60/1,617.53 = 1,003.50/x
3. Step 3: Cross multiply
   1,083.60x = 1,617.53 × 1,003.50
4. Step 4: Simplify right side
   1,083.60x = 1,623,186.34
5. Step 5: Solve for x
   x = 1,623,186.34/1,083.60
6. Step 6: Final answer
   x = 1,497.96