Finding the Fourth Proportional to 1,051.04, 1,582.82 and 915.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,051.04 : 1,582.82 = 915.72 : x
2. Step 2: Convert to fraction form
   1,051.04/1,582.82 = 915.72/x
3. Step 3: Cross multiply
   1,051.04x = 1,582.82 × 915.72
4. Step 4: Simplify right side
   1,051.04x = 1,449,419.93
5. Step 5: Solve for x
   x = 1,449,419.93/1,051.04
6. Step 6: Final answer
   x = 1,379.03