Finding the Fourth Proportional to 1,346.76, 1,858.61 and 897.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.76 : 1,858.61 = 897.86 : x
2. Step 2: Convert to fraction form
   1,346.76/1,858.61 = 897.86/x
3. Step 3: Cross multiply
   1,346.76x = 1,858.61 × 897.86
4. Step 4: Simplify right side
   1,346.76x = 1,668,757.79
5. Step 5: Solve for x
   x = 1,668,757.79/1,346.76
6. Step 6: Final answer
   x = 1,239.09