Finding the Fourth Proportional to 1,177.39, 1,624.72 and 653.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,177.39 : 1,624.72 = 653.41 : x
2. Step 2: Convert to fraction form
   1,177.39/1,624.72 = 653.41/x
3. Step 3: Cross multiply
   1,177.39x = 1,624.72 × 653.41
4. Step 4: Simplify right side
   1,177.39x = 1,061,608.30
5. Step 5: Solve for x
   x = 1,061,608.30/1,177.39
6. Step 6: Final answer
   x = 901.66