Finding the Fourth Proportional to 1,151.58, 1,588.56 and 994.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,151.58 : 1,588.56 = 994.86 : x
2. Step 2: Convert to fraction form
   1,151.58/1,588.56 = 994.86/x
3. Step 3: Cross multiply
   1,151.58x = 1,588.56 × 994.86
4. Step 4: Simplify right side
   1,151.58x = 1,580,394.80
5. Step 5: Solve for x
   x = 1,580,394.80/1,151.58
6. Step 6: Final answer
   x = 1,372.37