Finding the Fourth Proportional to 1,060.98, 1,588.89 and 877.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.98 : 1,588.89 = 877.02 : x
2. Step 2: Convert to fraction form
   1,060.98/1,588.89 = 877.02/x
3. Step 3: Cross multiply
   1,060.98x = 1,588.89 × 877.02
4. Step 4: Simplify right side
   1,060.98x = 1,393,488.31
5. Step 5: Solve for x
   x = 1,393,488.31/1,060.98
6. Step 6: Final answer
   x = 1,313.40