Finding the Fourth Proportional to 1,070.69, 1,614.24 and 1,056.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,070.69 : 1,614.24 = 1,056.87 : x
2. Step 2: Convert to fraction form
   1,070.69/1,614.24 = 1,056.87/x
3. Step 3: Cross multiply
   1,070.69x = 1,614.24 × 1,056.87
4. Step 4: Simplify right side
   1,070.69x = 1,706,041.83
5. Step 5: Solve for x
   x = 1,706,041.83/1,070.69
6. Step 6: Final answer
   x = 1,593.41