Finding the Fourth Proportional to 1,892.37, 2,611.56 and 1,229.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,892.37 : 2,611.56 = 1,229.79 : x
2. Step 2: Convert to fraction form
   1,892.37/2,611.56 = 1,229.79/x
3. Step 3: Cross multiply
   1,892.37x = 2,611.56 × 1,229.79
4. Step 4: Simplify right side
   1,892.37x = 3,211,670.37
5. Step 5: Solve for x
   x = 3,211,670.37/1,892.37
6. Step 6: Final answer
   x = 1,697.17