Finding the Fourth Proportional to 1,588.73, 2,191.39 and 1,256.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.73 : 2,191.39 = 1,256.63 : x
2. Step 2: Convert to fraction form
   1,588.73/2,191.39 = 1,256.63/x
3. Step 3: Cross multiply
   1,588.73x = 2,191.39 × 1,256.63
4. Step 4: Simplify right side
   1,588.73x = 2,753,752.32
5. Step 5: Solve for x
   x = 2,753,752.32/1,588.73
6. Step 6: Final answer
   x = 1,733.31