Finding the Fourth Proportional to 1,435.52, 2,152.73 and 510.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.52 : 2,152.73 = 510.91 : x
2. Step 2: Convert to fraction form
   1,435.52/2,152.73 = 510.91/x
3. Step 3: Cross multiply
   1,435.52x = 2,152.73 × 510.91
4. Step 4: Simplify right side
   1,435.52x = 1,099,844.31
5. Step 5: Solve for x
   x = 1,099,844.31/1,435.52
6. Step 6: Final answer
   x = 766.16