Finding the Fourth Proportional to 1,401.87, 1,933.79 and 876.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.87 : 1,933.79 = 876.99 : x
2. Step 2: Convert to fraction form
   1,401.87/1,933.79 = 876.99/x
3. Step 3: Cross multiply
   1,401.87x = 1,933.79 × 876.99
4. Step 4: Simplify right side
   1,401.87x = 1,695,910.11
5. Step 5: Solve for x
   x = 1,695,910.11/1,401.87
6. Step 6: Final answer
   x = 1,209.75