Finding the Fourth Proportional to 1,394.17, 2,095.59 and 877.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,394.17 : 2,095.59 = 877.50 : x
2. Step 2: Convert to fraction form
   1,394.17/2,095.59 = 877.50/x
3. Step 3: Cross multiply
   1,394.17x = 2,095.59 × 877.50
4. Step 4: Simplify right side
   1,394.17x = 1,838,880.23
5. Step 5: Solve for x
   x = 1,838,880.23/1,394.17
6. Step 6: Final answer
   x = 1,318.98