Finding the Fourth Proportional to 1,822.86, 2,515.86 and 1,225.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,822.86 : 2,515.86 = 1,225.08 : x
2. Step 2: Convert to fraction form
   1,822.86/2,515.86 = 1,225.08/x
3. Step 3: Cross multiply
   1,822.86x = 2,515.86 × 1,225.08
4. Step 4: Simplify right side
   1,822.86x = 3,082,129.77
5. Step 5: Solve for x
   x = 3,082,129.77/1,822.86
6. Step 6: Final answer
   x = 1,690.82