Finding the Fourth Proportional to 1,677.55, 2,515.56 and 897.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.55 : 2,515.56 = 897.42 : x
2. Step 2: Convert to fraction form
   1,677.55/2,515.56 = 897.42/x
3. Step 3: Cross multiply
   1,677.55x = 2,515.56 × 897.42
4. Step 4: Simplify right side
   1,677.55x = 2,257,513.86
5. Step 5: Solve for x
   x = 2,257,513.86/1,677.55
6. Step 6: Final answer
   x = 1,345.72