Finding the Fourth Proportional to 1,417.61, 2,122.47 and 1,069.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.61 : 2,122.47 = 1,069.89 : x
2. Step 2: Convert to fraction form
   1,417.61/2,122.47 = 1,069.89/x
3. Step 3: Cross multiply
   1,417.61x = 2,122.47 × 1,069.89
4. Step 4: Simplify right side
   1,417.61x = 2,270,809.43
5. Step 5: Solve for x
   x = 2,270,809.43/1,417.61
6. Step 6: Final answer
   x = 1,601.86