Finding the Fourth Proportional to 1,900,488.54, 2,850,435.69 and 621,085.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,900,488.54 : 2,850,435.69 = 621,085.86 : x
2. Step 2: Convert to fraction form
   1,900,488.54/2,850,435.69 = 621,085.86/x
3. Step 3: Cross multiply
   1,900,488.54x = 2,850,435.69 × 621,085.86
4. Step 4: Simplify right side
   1,900,488.54x = 1,770,365,301,898.34
5. Step 5: Solve for x
   x = 1,770,365,301,898.34/1,900,488.54
6. Step 6: Final answer
   x = 931,531.69