Finding the Fourth Proportional to 1,038.83, 1,558.15 and 345.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038.83 : 1,558.15 = 345.27 : x
2. Step 2: Convert to fraction form
   1,038.83/1,558.15 = 345.27/x
3. Step 3: Cross multiply
   1,038.83x = 1,558.15 × 345.27
4. Step 4: Simplify right side
   1,038.83x = 537,981.59
5. Step 5: Solve for x
   x = 537,981.59/1,038.83
6. Step 6: Final answer
   x = 517.88