Finding the Fourth Proportional to 1,117.94, 1,677.15 and 348.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,117.94 : 1,677.15 = 348.50 : x
2. Step 2: Convert to fraction form
   1,117.94/1,677.15 = 348.50/x
3. Step 3: Cross multiply
   1,117.94x = 1,677.15 × 348.50
4. Step 4: Simplify right side
   1,117.94x = 584,486.78
5. Step 5: Solve for x
   x = 584,486.78/1,117.94
6. Step 6: Final answer
   x = 522.82