Finding the Fourth Proportional to 1,552.81, 2,142.06 and 1,179.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.81 : 2,142.06 = 1,179.17 : x
2. Step 2: Convert to fraction form
   1,552.81/2,142.06 = 1,179.17/x
3. Step 3: Cross multiply
   1,552.81x = 2,142.06 × 1,179.17
4. Step 4: Simplify right side
   1,552.81x = 2,525,852.89
5. Step 5: Solve for x
   x = 2,525,852.89/1,552.81
6. Step 6: Final answer
   x = 1,626.63