Finding the Fourth Proportional to 2,978.03, 4,465.72 and 1,591.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.03 : 4,465.72 = 1,591.11 : x
2. Step 2: Convert to fraction form
   2,978.03/4,465.72 = 1,591.11/x
3. Step 3: Cross multiply
   2,978.03x = 4,465.72 × 1,591.11
4. Step 4: Simplify right side
   2,978.03x = 7,105,451.75
5. Step 5: Solve for x
   x = 7,105,451.75/2,978.03
6. Step 6: Final answer
   x = 2,385.96