Finding the Fourth Proportional to 705,412.17, 973,475.82 and 383,128.56

Step by Step Solution

1. Step 1: Write the proportion equation
   705,412.17 : 973,475.82 = 383,128.56 : x
2. Step 2: Convert to fraction form
   705,412.17/973,475.82 = 383,128.56/x
3. Step 3: Cross multiply
   705,412.17x = 973,475.82 × 383,128.56
4. Step 4: Simplify right side
   705,412.17x = 372,966,389,111.42
5. Step 5: Solve for x
   x = 372,966,389,111.42/705,412.17
6. Step 6: Final answer
   x = 528,721.23