Finding the Fourth Proportional to 1,558.64, 2,150.89 and 1,026.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.64 : 2,150.89 = 1,026.88 : x
2. Step 2: Convert to fraction form
   1,558.64/2,150.89 = 1,026.88/x
3. Step 3: Cross multiply
   1,558.64x = 2,150.89 × 1,026.88
4. Step 4: Simplify right side
   1,558.64x = 2,208,697.98
5. Step 5: Solve for x
   x = 2,208,697.98/1,558.64
6. Step 6: Final answer
   x = 1,417.07