Finding the Fourth Proportional to 1,624.47, 2,240.96 and 1,561.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,624.47 : 2,240.96 = 1,561.59 : x
2. Step 2: Convert to fraction form
   1,624.47/2,240.96 = 1,561.59/x
3. Step 3: Cross multiply
   1,624.47x = 2,240.96 × 1,561.59
4. Step 4: Simplify right side
   1,624.47x = 3,499,460.73
5. Step 5: Solve for x
   x = 3,499,460.73/1,624.47
6. Step 6: Final answer
   x = 2,154.22