Finding the Fourth Proportional to 2,920.83, 4,380.03 and 1,072.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,920.83 : 4,380.03 = 1,072.02 : x
2. Step 2: Convert to fraction form
   2,920.83/4,380.03 = 1,072.02/x
3. Step 3: Cross multiply
   2,920.83x = 4,380.03 × 1,072.02
4. Step 4: Simplify right side
   2,920.83x = 4,695,479.76
5. Step 5: Solve for x
   x = 4,695,479.76/2,920.83
6. Step 6: Final answer
   x = 1,607.58