Finding the Fourth Proportional to 2,318.16, 3,200.72 and 1,533.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,318.16 : 3,200.72 = 1,533.84 : x
2. Step 2: Convert to fraction form
   2,318.16/3,200.72 = 1,533.84/x
3. Step 3: Cross multiply
   2,318.16x = 3,200.72 × 1,533.84
4. Step 4: Simplify right side
   2,318.16x = 4,909,392.36
5. Step 5: Solve for x
   x = 4,909,392.36/2,318.16
6. Step 6: Final answer
   x = 2,117.80