Finding the Fourth Proportional to 1,404.37, 2,106.42 and 942.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.37 : 2,106.42 = 942.40 : x
2. Step 2: Convert to fraction form
   1,404.37/2,106.42 = 942.40/x
3. Step 3: Cross multiply
   1,404.37x = 2,106.42 × 942.40
4. Step 4: Simplify right side
   1,404.37x = 1,985,090.21
5. Step 5: Solve for x
   x = 1,985,090.21/1,404.37
6. Step 6: Final answer
   x = 1,413.51