Finding the Fourth Proportional to 1,558.04, 2,330.17 and 1,385.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.04 : 2,330.17 = 1,385.91 : x
2. Step 2: Convert to fraction form
   1,558.04/2,330.17 = 1,385.91/x
3. Step 3: Cross multiply
   1,558.04x = 2,330.17 × 1,385.91
4. Step 4: Simplify right side
   1,558.04x = 3,229,408.27
5. Step 5: Solve for x
   x = 3,229,408.27/1,558.04
6. Step 6: Final answer
   x = 2,072.74