Finding the Fourth Proportional to 1,396.16, 1,925.34 and 942.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.16 : 1,925.34 = 942.91 : x
2. Step 2: Convert to fraction form
   1,396.16/1,925.34 = 942.91/x
3. Step 3: Cross multiply
   1,396.16x = 1,925.34 × 942.91
4. Step 4: Simplify right side
   1,396.16x = 1,815,413.95
5. Step 5: Solve for x
   x = 1,815,413.95/1,396.16
6. Step 6: Final answer
   x = 1,300.30