Finding the Fourth Proportional to 1,653.32, 2,280.06 and 1,279.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,653.32 : 2,280.06 = 1,279.10 : x
2. Step 2: Convert to fraction form
   1,653.32/2,280.06 = 1,279.10/x
3. Step 3: Cross multiply
   1,653.32x = 2,280.06 × 1,279.10
4. Step 4: Simplify right side
   1,653.32x = 2,916,413.35
5. Step 5: Solve for x
   x = 2,916,413.35/1,653.32
6. Step 6: Final answer
   x = 1,763.98