Finding the Fourth Proportional to 1,533.57, 2,116.04 and 1,002.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,533.57 : 2,116.04 = 1,002.31 : x
2. Step 2: Convert to fraction form
   1,533.57/2,116.04 = 1,002.31/x
3. Step 3: Cross multiply
   1,533.57x = 2,116.04 × 1,002.31
4. Step 4: Simplify right side
   1,533.57x = 2,120,928.05
5. Step 5: Solve for x
   x = 2,120,928.05/1,533.57
6. Step 6: Final answer
   x = 1,383.00