Finding the Fourth Proportional to 1,413.55, 1,947.03 and 1,177.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.55 : 1,947.03 = 1,177.03 : x
2. Step 2: Convert to fraction form
   1,413.55/1,947.03 = 1,177.03/x
3. Step 3: Cross multiply
   1,413.55x = 1,947.03 × 1,177.03
4. Step 4: Simplify right side
   1,413.55x = 2,291,712.72
5. Step 5: Solve for x
   x = 2,291,712.72/1,413.55
6. Step 6: Final answer
   x = 1,621.25