Finding the Fourth Proportional to 1,111.55, 1,522.81 and 1,070.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.55 : 1,522.81 = 1,070.01 : x
2. Step 2: Convert to fraction form
   1,111.55/1,522.81 = 1,070.01/x
3. Step 3: Cross multiply
   1,111.55x = 1,522.81 × 1,070.01
4. Step 4: Simplify right side
   1,111.55x = 1,629,421.93
5. Step 5: Solve for x
   x = 1,629,421.93/1,111.55
6. Step 6: Final answer
   x = 1,465.90