Finding the Fourth Proportional to 1,890.18, 2,607.54 and 1,227.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,890.18 : 2,607.54 = 1,227.24 : x
2. Step 2: Convert to fraction form
   1,890.18/2,607.54 = 1,227.24/x
3. Step 3: Cross multiply
   1,890.18x = 2,607.54 × 1,227.24
4. Step 4: Simplify right side
   1,890.18x = 3,200,077.39
5. Step 5: Solve for x
   x = 3,200,077.39/1,890.18
6. Step 6: Final answer
   x = 1,693.00