Finding the Fourth Proportional to 1,141,830.34, 1,575,731.88 and 645,116.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141,830.34 : 1,575,731.88 = 645,116.47 : x
2. Step 2: Convert to fraction form
   1,141,830.34/1,575,731.88 = 645,116.47/x
3. Step 3: Cross multiply
   1,141,830.34x = 1,575,731.88 × 645,116.47
4. Step 4: Simplify right side
   1,141,830.34x = 1,016,530,584,152.73
5. Step 5: Solve for x
   x = 1,016,530,584,152.73/1,141,830.34
6. Step 6: Final answer
   x = 890,264.12