Finding the Fourth Proportional to 1,111.35, 1,533.81 and 692.13

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.35 : 1,533.81 = 692.13 : x
2. Step 2: Convert to fraction form
   1,111.35/1,533.81 = 692.13/x
3. Step 3: Cross multiply
   1,111.35x = 1,533.81 × 692.13
4. Step 4: Simplify right side
   1,111.35x = 1,061,590.16
5. Step 5: Solve for x
   x = 1,061,590.16/1,111.35
6. Step 6: Final answer
   x = 955.22