Finding the Fourth Proportional to 1,903.02, 2,855.81 and 670.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,903.02 : 2,855.81 = 670.43 : x
2. Step 2: Convert to fraction form
   1,903.02/2,855.81 = 670.43/x
3. Step 3: Cross multiply
   1,903.02x = 2,855.81 × 670.43
4. Step 4: Simplify right side
   1,903.02x = 1,914,606.42
5. Step 5: Solve for x
   x = 1,914,606.42/1,903.02
6. Step 6: Final answer
   x = 1,006.09