Finding the Fourth Proportional to 1,640.67, 2,264.17 and 942.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,640.67 : 2,264.17 = 942.04 : x
2. Step 2: Convert to fraction form
   1,640.67/2,264.17 = 942.04/x
3. Step 3: Cross multiply
   1,640.67x = 2,264.17 × 942.04
4. Step 4: Simplify right side
   1,640.67x = 2,132,938.71
5. Step 5: Solve for x
   x = 2,132,938.71/1,640.67
6. Step 6: Final answer
   x = 1,300.04