Finding the Fourth Proportional to 1,111.51, 1,533.80 and 614.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.51 : 1,533.80 = 614.10 : x
2. Step 2: Convert to fraction form
   1,111.51/1,533.80 = 614.10/x
3. Step 3: Cross multiply
   1,111.51x = 1,533.80 × 614.10
4. Step 4: Simplify right side
   1,111.51x = 941,908.12
5. Step 5: Solve for x
   x = 941,908.12/1,111.51
6. Step 6: Final answer
   x = 847.41