Finding the Fourth Proportional to 1,535.48, 2,118.59 and 906.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,535.48 : 2,118.59 = 906.03 : x
2. Step 2: Convert to fraction form
   1,535.48/2,118.59 = 906.03/x
3. Step 3: Cross multiply
   1,535.48x = 2,118.59 × 906.03
4. Step 4: Simplify right side
   1,535.48x = 1,919,506.10
5. Step 5: Solve for x
   x = 1,919,506.10/1,535.48
6. Step 6: Final answer
   x = 1,250.10