Finding the Fourth Proportional to 1,402.02, 1,933.53 and 878.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.02 : 1,933.53 = 878.10 : x
2. Step 2: Convert to fraction form
   1,402.02/1,933.53 = 878.10/x
3. Step 3: Cross multiply
   1,402.02x = 1,933.53 × 878.10
4. Step 4: Simplify right side
   1,402.02x = 1,697,832.69
5. Step 5: Solve for x
   x = 1,697,832.69/1,402.02
6. Step 6: Final answer
   x = 1,210.99