Finding the Fourth Proportional to 1,404.68, 1,938.60 and 964.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.68 : 1,938.60 = 964.04 : x
2. Step 2: Convert to fraction form
   1,404.68/1,938.60 = 964.04/x
3. Step 3: Cross multiply
   1,404.68x = 1,938.60 × 964.04
4. Step 4: Simplify right side
   1,404.68x = 1,868,887.94
5. Step 5: Solve for x
   x = 1,868,887.94/1,404.68
6. Step 6: Final answer
   x = 1,330.47