Finding the Fourth Proportional to 1,433.51, 1,977.54 and 903.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.51 : 1,977.54 = 903.05 : x
2. Step 2: Convert to fraction form
   1,433.51/1,977.54 = 903.05/x
3. Step 3: Cross multiply
   1,433.51x = 1,977.54 × 903.05
4. Step 4: Simplify right side
   1,433.51x = 1,785,807.61
5. Step 5: Solve for x
   x = 1,785,807.61/1,433.51
6. Step 6: Final answer
   x = 1,245.76