Finding the Fourth Proportional to 1,558.63, 2,161.15 and 1,506.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.63 : 2,161.15 = 1,506.59 : x
2. Step 2: Convert to fraction form
   1,558.63/2,161.15 = 1,506.59/x
3. Step 3: Cross multiply
   1,558.63x = 2,161.15 × 1,506.59
4. Step 4: Simplify right side
   1,558.63x = 3,255,966.98
5. Step 5: Solve for x
   x = 3,255,966.98/1,558.63
6. Step 6: Final answer
   x = 2,088.99