Finding the Fourth Proportional to 1,223,300.32, 1,835,176.35 and 402,685.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223,300.32 : 1,835,176.35 = 402,685.31 : x
2. Step 2: Convert to fraction form
   1,223,300.32/1,835,176.35 = 402,685.31/x
3. Step 3: Cross multiply
   1,223,300.32x = 1,835,176.35 × 402,685.31
4. Step 4: Simplify right side
   1,223,300.32x = 738,998,557,404.42
5. Step 5: Solve for x
   x = 738,998,557,404.42/1,223,300.32
6. Step 6: Final answer
   x = 604,102.32