Finding the Fourth Proportional to 1,077.58, 1,613.37 and 707.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077.58 : 1,613.37 = 707.98 : x
2. Step 2: Convert to fraction form
   1,077.58/1,613.37 = 707.98/x
3. Step 3: Cross multiply
   1,077.58x = 1,613.37 × 707.98
4. Step 4: Simplify right side
   1,077.58x = 1,142,233.69
5. Step 5: Solve for x
   x = 1,142,233.69/1,077.58
6. Step 6: Final answer
   x = 1,060.00