Finding the Fourth Proportional to 1,558.84, 2,331.38 and 1,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.84 : 2,331.38 = 1,386.72 : x
2. Step 2: Convert to fraction form
   1,558.84/2,331.38 = 1,386.72/x
3. Step 3: Cross multiply
   1,558.84x = 2,331.38 × 1,386.72
4. Step 4: Simplify right side
   1,558.84x = 3,232,971.27
5. Step 5: Solve for x
   x = 3,232,971.27/1,558.84
6. Step 6: Final answer
   x = 2,073.96