Finding the Fourth Proportional to 2,270.61, 3,405.42 and 883.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,270.61 : 3,405.42 = 883.98 : x
2. Step 2: Convert to fraction form
   2,270.61/3,405.42 = 883.98/x
3. Step 3: Cross multiply
   2,270.61x = 3,405.42 × 883.98
4. Step 4: Simplify right side
   2,270.61x = 3,010,323.17
5. Step 5: Solve for x
   x = 3,010,323.17/2,270.61
6. Step 6: Final answer
   x = 1,325.78