Finding the Fourth Proportional to 1,356.13, 1,870.77 and 883.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.13 : 1,870.77 = 883.99 : x
2. Step 2: Convert to fraction form
   1,356.13/1,870.77 = 883.99/x
3. Step 3: Cross multiply
   1,356.13x = 1,870.77 × 883.99
4. Step 4: Simplify right side
   1,356.13x = 1,653,741.97
5. Step 5: Solve for x
   x = 1,653,741.97/1,356.13
6. Step 6: Final answer
   x = 1,219.46