Finding the Fourth Proportional to 2,191.08, 3,280.86 and 1,538.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.08 : 3,280.86 = 1,538.28 : x
2. Step 2: Convert to fraction form
   2,191.08/3,280.86 = 1,538.28/x
3. Step 3: Cross multiply
   2,191.08x = 3,280.86 × 1,538.28
4. Step 4: Simplify right side
   2,191.08x = 5,046,881.32
5. Step 5: Solve for x
   x = 5,046,881.32/2,191.08
6. Step 6: Final answer
   x = 2,303.38