Finding the Fourth Proportional to 3,591.56, 5,385.72 and 1,398.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,591.56 : 5,385.72 = 1,398.62 : x
2. Step 2: Convert to fraction form
   3,591.56/5,385.72 = 1,398.62/x
3. Step 3: Cross multiply
   3,591.56x = 5,385.72 × 1,398.62
4. Step 4: Simplify right side
   3,591.56x = 7,532,575.71
5. Step 5: Solve for x
   x = 7,532,575.71/3,591.56
6. Step 6: Final answer
   x = 2,097.30