Finding the Fourth Proportional to 1,401.84, 1,933.68 and 877.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.84 : 1,933.68 = 877.77 : x
2. Step 2: Convert to fraction form
   1,401.84/1,933.68 = 877.77/x
3. Step 3: Cross multiply
   1,401.84x = 1,933.68 × 877.77
4. Step 4: Simplify right side
   1,401.84x = 1,697,326.29
5. Step 5: Solve for x
   x = 1,697,326.29/1,401.84
6. Step 6: Final answer
   x = 1,210.78