Finding the Fourth Proportional to 1,178.58, 1,622.71 and 897.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,178.58 : 1,622.71 = 897.91 : x
2. Step 2: Convert to fraction form
   1,178.58/1,622.71 = 897.91/x
3. Step 3: Cross multiply
   1,178.58x = 1,622.71 × 897.91
4. Step 4: Simplify right side
   1,178.58x = 1,457,050.69
5. Step 5: Solve for x
   x = 1,457,050.69/1,178.58
6. Step 6: Final answer
   x = 1,236.28