Finding the Fourth Proportional to 1,522.50, 2,103.06 and 1,228.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.50 : 2,103.06 = 1,228.86 : x
2. Step 2: Convert to fraction form
   1,522.50/2,103.06 = 1,228.86/x
3. Step 3: Cross multiply
   1,522.50x = 2,103.06 × 1,228.86
4. Step 4: Simplify right side
   1,522.50x = 2,584,366.31
5. Step 5: Solve for x
   x = 2,584,366.31/1,522.50
6. Step 6: Final answer
   x = 1,697.45