Finding the Fourth Proportional to 1,533.43, 2,116.20 and 903.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,533.43 : 2,116.20 = 903.98 : x
2. Step 2: Convert to fraction form
   1,533.43/2,116.20 = 903.98/x
3. Step 3: Cross multiply
   1,533.43x = 2,116.20 × 903.98
4. Step 4: Simplify right side
   1,533.43x = 1,913,000.22
5. Step 5: Solve for x
   x = 1,913,000.22/1,533.43
6. Step 6: Final answer
   x = 1,247.53