Finding the Fourth Proportional to 1,188.10, 1,637.31 and 1,032.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,188.10 : 1,637.31 = 1,032.58 : x
2. Step 2: Convert to fraction form
   1,188.10/1,637.31 = 1,032.58/x
3. Step 3: Cross multiply
   1,188.10x = 1,637.31 × 1,032.58
4. Step 4: Simplify right side
   1,188.10x = 1,690,653.56
5. Step 5: Solve for x
   x = 1,690,653.56/1,188.10
6. Step 6: Final answer
   x = 1,422.99