Finding the Fourth Proportional to 1,372.35, 1,894.74 and 1,224.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.35 : 1,894.74 = 1,224.75 : x
2. Step 2: Convert to fraction form
   1,372.35/1,894.74 = 1,224.75/x
3. Step 3: Cross multiply
   1,372.35x = 1,894.74 × 1,224.75
4. Step 4: Simplify right side
   1,372.35x = 2,320,582.82
5. Step 5: Solve for x
   x = 2,320,582.82/1,372.35
6. Step 6: Final answer
   x = 1,690.96