Finding the Fourth Proportional to 2,117.00, 2,921.40 and 1,185.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117.00 : 2,921.40 = 1,185.50 : x
2. Step 2: Convert to fraction form
   2,117.00/2,921.40 = 1,185.50/x
3. Step 3: Cross multiply
   2,117.00x = 2,921.40 × 1,185.50
4. Step 4: Simplify right side
   2,117.00x = 3,463,327.00
5. Step 5: Solve for x
   x = 3,463,327.00/2,117.00
6. Step 6: Final answer
   x = 1,635.96