Finding the Fourth Proportional to 1,522.30, 2,137.70 and 1,522.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.30 : 2,137.70 = 1,522.30 : x
2. Step 2: Convert to fraction form
   1,522.30/2,137.70 = 1,522.30/x
3. Step 3: Cross multiply
   1,522.30x = 2,137.70 × 1,522.30
4. Step 4: Simplify right side
   1,522.30x = 3,254,220.71
5. Step 5: Solve for x
   x = 3,254,220.71/1,522.30
6. Step 6: Final answer
   x = 2,137.70