Finding the Fourth Proportional to 2,173.34, 2,999.23 and 1,178.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,173.34 : 2,999.23 = 1,178.64 : x
2. Step 2: Convert to fraction form
   2,173.34/2,999.23 = 1,178.64/x
3. Step 3: Cross multiply
   2,173.34x = 2,999.23 × 1,178.64
4. Step 4: Simplify right side
   2,173.34x = 3,535,009.50
5. Step 5: Solve for x
   x = 3,535,009.50/2,173.34
6. Step 6: Final answer
   x = 1,626.53