Finding the Fourth Proportional to 1,672.03, 2,302.59 and 1,515.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.03 : 2,302.59 = 1,515.30 : x
2. Step 2: Convert to fraction form
   1,672.03/2,302.59 = 1,515.30/x
3. Step 3: Cross multiply
   1,672.03x = 2,302.59 × 1,515.30
4. Step 4: Simplify right side
   1,672.03x = 3,489,114.63
5. Step 5: Solve for x
   x = 3,489,114.63/1,672.03
6. Step 6: Final answer
   x = 2,086.75