Finding the Fourth Proportional to 1,111.25, 1,522.40 and 1,069.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.25 : 1,522.40 = 1,069.71 : x
2. Step 2: Convert to fraction form
   1,111.25/1,522.40 = 1,069.71/x
3. Step 3: Cross multiply
   1,111.25x = 1,522.40 × 1,069.71
4. Step 4: Simplify right side
   1,111.25x = 1,628,515.45
5. Step 5: Solve for x
   x = 1,628,515.45/1,111.25
6. Step 6: Final answer
   x = 1,465.48