Finding the Fourth Proportional to 1,437.58, 1,983.25 and 840.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,437.58 : 1,983.25 = 840.03 : x
2. Step 2: Convert to fraction form
   1,437.58/1,983.25 = 840.03/x
3. Step 3: Cross multiply
   1,437.58x = 1,983.25 × 840.03
4. Step 4: Simplify right side
   1,437.58x = 1,665,989.50
5. Step 5: Solve for x
   x = 1,665,989.50/1,437.58
6. Step 6: Final answer
   x = 1,158.88