Finding the Fourth Proportional to 1,558.45, 2,341.71 and 1,172.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.45 : 2,341.71 = 1,172.09 : x
2. Step 2: Convert to fraction form
   1,558.45/2,341.71 = 1,172.09/x
3. Step 3: Cross multiply
   1,558.45x = 2,341.71 × 1,172.09
4. Step 4: Simplify right side
   1,558.45x = 2,744,694.87
5. Step 5: Solve for x
   x = 2,744,694.87/1,558.45
6. Step 6: Final answer
   x = 1,761.17