Finding the Fourth Proportional to 1,333.27, 1,837.70 and 891.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.27 : 1,837.70 = 891.01 : x
2. Step 2: Convert to fraction form
   1,333.27/1,837.70 = 891.01/x
3. Step 3: Cross multiply
   1,333.27x = 1,837.70 × 891.01
4. Step 4: Simplify right side
   1,333.27x = 1,637,399.89
5. Step 5: Solve for x
   x = 1,637,399.89/1,333.27
6. Step 6: Final answer
   x = 1,228.11