Finding the Fourth Proportional to 1,662.03, 2,494.59 and 840.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.03 : 2,494.59 = 840.88 : x
2. Step 2: Convert to fraction form
   1,662.03/2,494.59 = 840.88/x
3. Step 3: Cross multiply
   1,662.03x = 2,494.59 × 840.88
4. Step 4: Simplify right side
   1,662.03x = 2,097,650.84
5. Step 5: Solve for x
   x = 2,097,650.84/1,662.03
6. Step 6: Final answer
   x = 1,262.10