Finding the Fourth Proportional to 762,340.31, 1,051,853.21 and 456,300.42

Step by Step Solution

1. Step 1: Write the proportion equation
   762,340.31 : 1,051,853.21 = 456,300.42 : x
2. Step 2: Convert to fraction form
   762,340.31/1,051,853.21 = 456,300.42/x
3. Step 3: Cross multiply
   762,340.31x = 1,051,853.21 × 456,300.42
4. Step 4: Simplify right side
   762,340.31x = 479,961,061,501.35
5. Step 5: Solve for x
   x = 479,961,061,501.35/762,340.31
6. Step 6: Final answer
   x = 629,588.98