Finding the Fourth Proportional to 1,435.07, 1,980.15 and 903.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.07 : 1,980.15 = 903.02 : x
2. Step 2: Convert to fraction form
   1,435.07/1,980.15 = 903.02/x
3. Step 3: Cross multiply
   1,435.07x = 1,980.15 × 903.02
4. Step 4: Simplify right side
   1,435.07x = 1,788,101.77
5. Step 5: Solve for x
   x = 1,788,101.77/1,435.07
6. Step 6: Final answer
   x = 1,246.01