Finding the Fourth Proportional to 1,558.54, 2,345.37 and 1,405.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.54 : 2,345.37 = 1,405.18 : x
2. Step 2: Convert to fraction form
   1,558.54/2,345.37 = 1,405.18/x
3. Step 3: Cross multiply
   1,558.54x = 2,345.37 × 1,405.18
4. Step 4: Simplify right side
   1,558.54x = 3,295,667.02
5. Step 5: Solve for x
   x = 3,295,667.02/1,558.54
6. Step 6: Final answer
   x = 2,114.59