Finding the Fourth Proportional to 1,388.42, 1,916.00 and 758.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388.42 : 1,916.00 = 758.93 : x
2. Step 2: Convert to fraction form
   1,388.42/1,916.00 = 758.93/x
3. Step 3: Cross multiply
   1,388.42x = 1,916.00 × 758.93
4. Step 4: Simplify right side
   1,388.42x = 1,454,113.72
5. Step 5: Solve for x
   x = 1,454,113.72/1,388.42
6. Step 6: Final answer
   x = 1,047.32