Finding the Fourth Proportional to 1,435.02, 1,979.89 and 903.66

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.02 : 1,979.89 = 903.66 : x
2. Step 2: Convert to fraction form
   1,435.02/1,979.89 = 903.66/x
3. Step 3: Cross multiply
   1,435.02x = 1,979.89 × 903.66
4. Step 4: Simplify right side
   1,435.02x = 1,789,145.14
5. Step 5: Solve for x
   x = 1,789,145.14/1,435.02
6. Step 6: Final answer
   x = 1,246.77