Finding the Fourth Proportional to 2,985.31, 4,479.72 and 1,672.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,985.31 : 4,479.72 = 1,672.03 : x
2. Step 2: Convert to fraction form
   2,985.31/4,479.72 = 1,672.03/x
3. Step 3: Cross multiply
   2,985.31x = 4,479.72 × 1,672.03
4. Step 4: Simplify right side
   2,985.31x = 7,490,226.23
5. Step 5: Solve for x
   x = 7,490,226.23/2,985.31
6. Step 6: Final answer
   x = 2,509.03