Finding the Fourth Proportional to 3,945.73, 5,914.43 and 1,312.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.73 : 5,914.43 = 1,312.53 : x
2. Step 2: Convert to fraction form
   3,945.73/5,914.43 = 1,312.53/x
3. Step 3: Cross multiply
   3,945.73x = 5,914.43 × 1,312.53
4. Step 4: Simplify right side
   3,945.73x = 7,762,861.47
5. Step 5: Solve for x
   x = 7,762,861.47/3,945.73
6. Step 6: Final answer
   x = 1,967.41