Finding the Fourth Proportional to 1,558.86, 2,151.39 and 969.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,558.86 : 2,151.39 = 969.48 : x
2. Step 2: Convert to fraction form
   1,558.86/2,151.39 = 969.48/x
3. Step 3: Cross multiply
   1,558.86x = 2,151.39 × 969.48
4. Step 4: Simplify right side
   1,558.86x = 2,085,733.21
5. Step 5: Solve for x
   x = 2,085,733.21/1,558.86
6. Step 6: Final answer
   x = 1,337.99