Finding the Fourth Proportional to 697,506, 1,046,268.72 and 198,870

Step by Step Solution

1. Step 1: Write the proportion equation
   697,506 : 1,046,268.72 = 198,870 : x
2. Step 2: Convert to fraction form
   697,506/1,046,268.72 = 198,870/x
3. Step 3: Cross multiply
   697,506x = 1,046,268.72 × 198,870
4. Step 4: Simplify right side
   697,506x = 208,071,460,346.40
5. Step 5: Solve for x
   x = 208,071,460,346.40/697,506
6. Step 6: Final answer
   x = 298,307.77