Finding the Fourth Proportional to 1,056.06, 1,455.84 and 740.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.06 : 1,455.84 = 740.34 : x
2. Step 2: Convert to fraction form
   1,056.06/1,455.84 = 740.34/x
3. Step 3: Cross multiply
   1,056.06x = 1,455.84 × 740.34
4. Step 4: Simplify right side
   1,056.06x = 1,077,816.59
5. Step 5: Solve for x
   x = 1,077,816.59/1,056.06
6. Step 6: Final answer
   x = 1,020.60