Finding the Fourth Proportional to 1,673.37, 2,307.93 and 1,561.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,673.37 : 2,307.93 = 1,561.59 : x
2. Step 2: Convert to fraction form
   1,673.37/2,307.93 = 1,561.59/x
3. Step 3: Cross multiply
   1,673.37x = 2,307.93 × 1,561.59
4. Step 4: Simplify right side
   1,673.37x = 3,604,040.41
5. Step 5: Solve for x
   x = 3,604,040.41/1,673.37
6. Step 6: Final answer
   x = 2,153.76