Finding the Fourth Proportional to 1,333.56, 1,840.64 and 810.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.56 : 1,840.64 = 810.03 : x
2. Step 2: Convert to fraction form
   1,333.56/1,840.64 = 810.03/x
3. Step 3: Cross multiply
   1,333.56x = 1,840.64 × 810.03
4. Step 4: Simplify right side
   1,333.56x = 1,490,968.01
5. Step 5: Solve for x
   x = 1,490,968.01/1,333.56
6. Step 6: Final answer
   x = 1,118.04